diff --git a/tests/sentry/api/endpoints/test_group_notes.py b/tests/sentry/api/endpoints/test_group_notes.py
index 3a3c4dce39efa4..58a9ad3057a346 100644
--- a/tests/sentry/api/endpoints/test_group_notes.py
+++ b/tests/sentry/api/endpoints/test_group_notes.py
@@ -52,7 +52,6 @@ def test_note_merge(self):
             data={"text": "This looks bad :)"},
             datetime=now - datetime.timedelta(days=70),
         )
-        assert note1.data is not None
         note2 = Activity.objects.create(
             group=group1,
             project=project1,
@@ -61,7 +60,6 @@ def test_note_merge(self):
             data={"text": "Yeah we should probably look into this"},
             datetime=now - datetime.timedelta(days=66),
         )
-        assert note2.data is not None
 
         project2 = self.create_project()
         group2 = self.create_group(project2)
@@ -74,7 +72,6 @@ def test_note_merge(self):
             data={"text": "I have been a good Sentry :)"},
             datetime=now - datetime.timedelta(days=90),
         )
-        assert note3.data is not None
         note4 = Activity.objects.create(
             group=group2,
             project=project2,
@@ -83,7 +80,6 @@ def test_note_merge(self):
             data={"text": "You have been a bad user :)"},
             datetime=now - datetime.timedelta(days=88),
         )
-        assert note4.data is not None
 
         with self.tasks():
             merge_groups([group1.id], group2.id)
diff --git a/tests/sentry/event_manager/test_event_manager.py b/tests/sentry/event_manager/test_event_manager.py
index 3e5976794b7e4d..78531ab52b18a7 100644
--- a/tests/sentry/event_manager/test_event_manager.py
+++ b/tests/sentry/event_manager/test_event_manager.py
@@ -357,7 +357,6 @@ def test_marks_as_unresolved_with_new_release(
         assert group.status == GroupStatus.RESOLVED
 
         activity = Activity.objects.get(id=activity.id)
-        assert activity.data is not None
         assert activity.data["version"] == ""
 
         assert GroupResolution.objects.filter(group=group).exists()
@@ -372,7 +371,6 @@ def test_marks_as_unresolved_with_new_release(
         assert group.status == GroupStatus.UNRESOLVED
 
         activity = Activity.objects.get(id=activity.id)
-        assert activity.data is not None
         assert activity.data["version"] == "b"
 
         assert not GroupResolution.objects.filter(group=group).exists()
@@ -433,13 +431,11 @@ def test_that_release_in_latest_activity_prior_to_regression_is_not_overridden(
         assert group.status == GroupStatus.UNRESOLVED
 
         activity = Activity.objects.get(id=activity.id)
-        assert activity.data is not None
         assert activity.data["version"] == "foobar"
 
         regressed_activity = Activity.objects.get(
             group=group, type=ActivityType.SET_REGRESSION.value
         )
-        assert regressed_activity.data is not None
         assert regressed_activity.data["version"] == "b"
         assert regressed_activity.data["follows_semver"] is False
 
@@ -497,14 +493,12 @@ def test_current_release_version_in_latest_activity_prior_to_regression_is_not_o
         assert group.status == GroupStatus.UNRESOLVED
 
         activity = Activity.objects.get(id=activity.id)
-        assert activity.data is not None
         assert activity.data["version"] == "b"
         assert activity.data["current_release_version"] == "pre foobar"
 
         regressed_activity = Activity.objects.get(
             group=group, type=ActivityType.SET_REGRESSION.value
         )
-        assert regressed_activity.data is not None
         assert regressed_activity.data["version"] == "b"
 
         mock_send_activity_notifications_delay.assert_called_once_with(regressed_activity.id)
@@ -561,13 +555,11 @@ def test_resolved_in_release_regression_activity_follows_semver(
         assert group.status == GroupStatus.UNRESOLVED
 
         activity = Activity.objects.get(id=activity.id)
-        assert activity.data is not None
         assert activity.data["version"] == "foo@1.0.0"
 
         regressed_activity = Activity.objects.get(
             group=group, type=ActivityType.SET_REGRESSION.value
         )
-        assert regressed_activity.data is not None
         assert regressed_activity.data["version"] == "foo@2.0.0"
         assert regressed_activity.data["follows_semver"] is True
         assert regressed_activity.data["resolved_in_version"] == "foo@1.0.0"
@@ -843,7 +835,6 @@ def test_marks_as_unresolved_with_new_release_with_integration(
                 assert group.status == GroupStatus.RESOLVED
 
                 activity = Activity.objects.get(id=activity.id)
-                assert activity.data is not None
                 assert activity.data["version"] == ""
 
                 assert GroupResolution.objects.filter(group=group).exists()
@@ -862,7 +853,6 @@ def test_marks_as_unresolved_with_new_release_with_integration(
                 assert group.status == GroupStatus.UNRESOLVED
 
                 activity = Activity.objects.get(id=activity.id)
-                assert activity.data is not None
                 assert activity.data["version"] == "b"
 
                 assert not GroupResolution.objects.filter(group=group).exists()
diff --git a/tests/sentry/integrations/msteams/notifications/test_note.py b/tests/sentry/integrations/msteams/notifications/test_note.py
index 2fc30f423e6131..4a648b04418d53 100644
--- a/tests/sentry/integrations/msteams/notifications/test_note.py
+++ b/tests/sentry/integrations/msteams/notifications/test_note.py
@@ -45,7 +45,6 @@ def test_note(self, mock_send_card: MagicMock):
             f"[{self.group.title}](http://testserver/organizations/{self.organization.slug}/issues/{self.group.id}/?referrer=note\\_activity-msteams&notification\\_uuid="
             in body[1]["text"]
         )
-        assert notification.activity.data is not None
         assert notification.activity.data["text"] == body[2]["text"]
         notification_uuid = self.get_notification_uuid(body[3]["columns"][1]["items"][0]["text"])
         assert (
diff --git a/tests/sentry/integrations/msteams/notifications/test_resolved.py b/tests/sentry/integrations/msteams/notifications/test_resolved.py
index 8b977c5fbecf78..612d036e479823 100644
--- a/tests/sentry/integrations/msteams/notifications/test_resolved.py
+++ b/tests/sentry/integrations/msteams/notifications/test_resolved.py
@@ -82,7 +82,6 @@ def test_resolved_in_release(self, mock_send_card):
         body = args[1]["body"]
         assert 4 == len(body)
 
-        assert notification.activity.data is not None
         release_name = notification.activity.data["version"]
         assert (
             f"Issue marked as resolved in {release_name} by {self.user.get_display_name()}"
diff --git a/tests/sentry/issues/endpoints/test_organization_group_index.py b/tests/sentry/issues/endpoints/test_organization_group_index.py
index f3b4f083934617..343e5a376af929 100644
--- a/tests/sentry/issues/endpoints/test_organization_group_index.py
+++ b/tests/sentry/issues/endpoints/test_organization_group_index.py
@@ -4112,7 +4112,6 @@ def test_self_assign_issue_next_release(self) -> None:
         activity = Activity.objects.get(
             group=group, type=ActivityType.SET_RESOLVED_IN_RELEASE.value
         )
-        assert activity.data is not None
         assert activity.data["version"] == ""
         with assume_test_silo_mode(SiloMode.CONTROL):
             uo1.delete()
@@ -4179,7 +4178,6 @@ def test_in_semver_projects_group_resolution_stores_current_release_version(self
             ident=grp_resolution.id,
         )
 
-        assert activity.data is not None
         assert activity.data["current_release_version"] == release_2.version
 
     def test_in_non_semver_projects_group_resolution_stores_current_release_version(self) -> None:
@@ -4329,7 +4327,6 @@ def test_in_non_semver_projects_resolved_in_next_release_is_equated_to_in_releas
             type=ActivityType.SET_RESOLVED_IN_RELEASE.value,
             ident=grp_resolution.id,
         )
-        assert activity.data is not None
         assert activity.data["version"] == release_2.version
 
     def test_selective_status_update(self) -> None:
@@ -4399,7 +4396,6 @@ def test_set_resolved_in_current_release(self) -> None:
         activity = Activity.objects.get(
             group=group, type=ActivityType.SET_RESOLVED_IN_RELEASE.value
         )
-        assert activity.data is not None
         assert activity.data["version"] == release.version
         assert GroupHistory.objects.filter(
             group=group, status=GroupHistoryStatus.SET_RESOLVED_IN_RELEASE
@@ -4441,7 +4437,6 @@ def test_set_resolved_in_explicit_release(self) -> None:
         activity = Activity.objects.get(
             group=group, type=ActivityType.SET_RESOLVED_IN_RELEASE.value
         )
-        assert activity.data is not None
         assert activity.data["version"] == release.version
 
     def test_in_semver_projects_set_resolved_in_explicit_release(self) -> None:
@@ -4486,7 +4481,6 @@ def test_in_semver_projects_set_resolved_in_explicit_release(self) -> None:
         activity = Activity.objects.get(
             group=group, type=ActivityType.SET_RESOLVED_IN_RELEASE.value
         )
-        assert activity.data is not None
         assert activity.data["version"] == release_1.version
 
         assert GroupResolution.has_resolution(group=group, release=release_2)
@@ -4524,7 +4518,6 @@ def test_set_resolved_in_next_release(self) -> None:
         activity = Activity.objects.get(
             group=group, type=ActivityType.SET_RESOLVED_IN_RELEASE.value
         )
-        assert activity.data is not None
         assert activity.data["version"] == ""
 
     def test_set_resolved_in_next_release_legacy(self) -> None:
@@ -4562,7 +4555,6 @@ def test_set_resolved_in_next_release_legacy(self) -> None:
         activity = Activity.objects.get(
             group=group, type=ActivityType.SET_RESOLVED_IN_RELEASE.value
         )
-        assert activity.data is not None
         assert activity.data["version"] == ""
 
     def test_set_resolved_in_explicit_commit_unreleased(self) -> None:
@@ -4595,7 +4587,6 @@ def test_set_resolved_in_explicit_commit_unreleased(self) -> None:
         ).exists()
 
         activity = Activity.objects.get(group=group, type=ActivityType.SET_RESOLVED_IN_COMMIT.value)
-        assert activity.data is not None
         assert activity.data["commit"] == commit.id
         assert GroupHistory.objects.filter(
             group=group, status=GroupHistoryStatus.SET_RESOLVED_IN_COMMIT
@@ -4634,7 +4625,6 @@ def test_set_resolved_in_explicit_commit_released(self) -> None:
         ).exists()
 
         activity = Activity.objects.get(group=group, type=ActivityType.SET_RESOLVED_IN_COMMIT.value)
-        assert activity.data is not None
         assert activity.data["commit"] == commit.id
 
         resolution = GroupResolution.objects.get(group=group)
diff --git a/tests/sentry/issues/test_status_change.py b/tests/sentry/issues/test_status_change.py
index dec4a913646044..2f6ae96b041030 100644
--- a/tests/sentry/issues/test_status_change.py
+++ b/tests/sentry/issues/test_status_change.py
@@ -83,7 +83,6 @@ def test_ignore_new_issue(self, issue_ignored: Any) -> None:
 
         assert issue_ignored.called
         activity = Activity.objects.get(group=self.group, type=ActivityType.SET_IGNORED.value)
-        assert activity.data is not None
         assert activity.data.get("ignoreDuration") == 30
 
         assert GroupHistory.objects.filter(
@@ -107,7 +106,6 @@ def test_ignore_until_escalating(self, issue_ignored: Any) -> None:
 
         assert issue_ignored.called
         activity = Activity.objects.get(group=self.group, type=ActivityType.SET_IGNORED.value)
-        assert activity.data is not None
         assert activity.data.get("ignoreUntilEscalating")
 
         assert GroupHistory.objects.filter(
diff --git a/tests/sentry/models/test_activity.py b/tests/sentry/models/test_activity.py
index aa7c6fe279177a..990238edd698ac 100644
--- a/tests/sentry/models/test_activity.py
+++ b/tests/sentry/models/test_activity.py
@@ -49,7 +49,6 @@ def test_get_activities_for_group_priority(self):
         assert act_for_group[0] == activities[-1]
         assert act_for_group[1] == activities[-2]
         assert act_for_group[-1].type == ActivityType.FIRST_SEEN.value
-        assert act_for_group[-1].data is not None
         assert act_for_group[-1].data["priority"] == PriorityLevel.HIGH.to_str()
 
     def test_get_activities_for_group_simple_priority_ff_on_dups(self):
@@ -91,7 +90,6 @@ def test_get_activities_for_group_simple_priority_ff_on_dups(self):
         assert act_for_group[0] == activities[-1]
         assert act_for_group[1] == activities[-2]
         assert act_for_group[-1].type == ActivityType.FIRST_SEEN.value
-        assert act_for_group[-1].data is not None
         assert act_for_group[-1].data["priority"] == PriorityLevel.HIGH.to_str()
 
     def test_get_activities_for_group_simple(self):
diff --git a/tests/sentry/models/test_deploy.py b/tests/sentry/models/test_deploy.py
index f1b9c98666b3b2..9493a67a82c99d 100644
--- a/tests/sentry/models/test_deploy.py
+++ b/tests/sentry/models/test_deploy.py
@@ -62,7 +62,6 @@ def test_no_commits_no_head_commits(self):
         activity = Activity.objects.get(
             type=ActivityType.DEPLOY.value, project=project, ident=release.version
         )
-        assert activity.data is not None
         assert activity.data["deploy_id"] == deploy.id
         assert Deploy.objects.get(id=deploy.id).notified is True
 
@@ -113,6 +112,5 @@ def test_no_commits_fetch_complete(self):
         activity = Activity.objects.get(
             type=ActivityType.DEPLOY.value, project=project, ident=release.version
         )
-        assert activity.data is not None
         assert activity.data["deploy_id"] == deploy.id
         assert Deploy.objects.get(id=deploy.id).notified is True
diff --git a/tests/sentry/models/test_groupassignee.py b/tests/sentry/models/test_groupassignee.py
index d07523e54d5000..e634f27d2d13e5 100644
--- a/tests/sentry/models/test_groupassignee.py
+++ b/tests/sentry/models/test_groupassignee.py
@@ -41,7 +41,6 @@ def test_assign_user(self):
             project=self.group.project, group=self.group, type=ActivityType.ASSIGNED.value
         )
 
-        assert activity.data is not None
         assert activity.data["assignee"] == str(self.user.id)
         assert activity.data["assigneeEmail"] == self.user.email
         assert activity.data["assigneeType"] == "user"
@@ -57,7 +56,6 @@ def test_assign_team(self):
             project=self.group.project, group=self.group, type=ActivityType.ASSIGNED.value
         )
 
-        assert activity.data is not None
         assert activity.data["assignee"] == str(self.team.id)
         assert activity.data["assigneeEmail"] is None
         assert activity.data["assigneeType"] == "team"
@@ -72,7 +70,6 @@ def test_create_only(self):
         activity = Activity.objects.get(
             project=self.group.project, group=self.group, type=ActivityType.ASSIGNED.value
         )
-        assert activity.data is not None
         assert activity.data["assignee"] == str(self.user.id)
         assert activity.data["assigneeEmail"] == self.user.email
         assert activity.data["assigneeType"] == "user"
@@ -88,7 +85,6 @@ def test_create_only(self):
         activity = Activity.objects.get(
             project=self.group.project, group=self.group, type=ActivityType.ASSIGNED.value
         )
-        assert activity.data is not None
         assert activity.data["assignee"] == str(self.user.id)
         assert activity.data["assigneeEmail"] == self.user.email
         assert activity.data["assigneeType"] == "user"
@@ -112,12 +108,10 @@ def test_reassign_user_to_team(self):
             ).order_by("id")
         )
 
-        assert activity[0].data is not None
         assert activity[0].data["assignee"] == str(self.user.id)
         assert activity[0].data["assigneeEmail"] == self.user.email
         assert activity[0].data["assigneeType"] == "user"
 
-        assert activity[1].data is not None
         assert activity[1].data["assignee"] == str(self.team.id)
         assert activity[1].data["assigneeEmail"] is None
         assert activity[1].data["assigneeType"] == "team"
@@ -171,7 +165,6 @@ def test_assignee_sync_outbound_assign(self, mock_sync_assignee_outbound):
                     project=self.group.project, group=self.group, type=ActivityType.ASSIGNED.value
                 )
 
-                assert activity.data is not None
                 assert activity.data["assignee"] == str(self.user.id)
                 assert activity.data["assigneeEmail"] == self.user.email
                 assert activity.data["assigneeType"] == "user"
diff --git a/tests/sentry/tasks/test_clear_expired_resolutions.py b/tests/sentry/tasks/test_clear_expired_resolutions.py
index 675bf1a1fc6bc5..f97e3a40d350fa 100644
--- a/tests/sentry/tasks/test_clear_expired_resolutions.py
+++ b/tests/sentry/tasks/test_clear_expired_resolutions.py
@@ -71,9 +71,7 @@ def test_simple(self):
         assert resolution2.status == GroupResolution.Status.pending
 
         activity1 = Activity.objects.get(id=activity1.id)
-        assert activity1.data is not None
         assert activity1.data["version"] == new_release.version
 
         activity2 = Activity.objects.get(id=activity2.id)
-        assert activity2.data is not None
         assert activity2.data["version"] == ""
diff --git a/tests/sentry/tasks/test_email.py b/tests/sentry/tasks/test_email.py
index f4be5bb7068b7e..8205297356ca45 100644
--- a/tests/sentry/tasks/test_email.py
+++ b/tests/sentry/tasks/test_email.py
@@ -15,7 +15,6 @@ def test_simple(self):
 
         activity = Activity.objects.get(group=group, type=ActivityType.NOTE.value)
         assert activity.user_id == self.user.id
-        assert activity.data is not None
         assert activity.data["text"] == "hello world!"
 
     def test_handle_unknown_address(self):
diff --git a/tests/sentry/tasks/test_sentry_apps.py b/tests/sentry/tasks/test_sentry_apps.py
index bb9544af881957..672d0e0bee86a1 100644
--- a/tests/sentry/tasks/test_sentry_apps.py
+++ b/tests/sentry/tasks/test_sentry_apps.py
@@ -467,7 +467,6 @@ def setUp(self):
             user_id=self.user.id,
             data={"text": "hello world"},
         )
-        assert self.note.data is not None
         self.data = {
             "comment_id": self.note.id,
             "timestamp": self.note.datetime,
diff --git a/tests/snuba/api/endpoints/test_group_details.py b/tests/snuba/api/endpoints/test_group_details.py
index 283c6556e02567..bfed6d0e73be7a 100644
--- a/tests/snuba/api/endpoints/test_group_details.py
+++ b/tests/snuba/api/endpoints/test_group_details.py
@@ -241,7 +241,6 @@ def test_group_post_priority(self):
         assert act_for_group[0].type == ActivityType.SET_PRIORITY.value
         assert act_for_group[-1].type == ActivityType.FIRST_SEEN.value
         assert act_for_group[0].user_id == self.user.id
-        assert act_for_group[0].data is not None
         assert act_for_group[0].data["priority"] == "high"
 
         get_response_after = self.client.get(url, format="json")
diff --git a/tests/snuba/api/endpoints/test_project_group_index.py b/tests/snuba/api/endpoints/test_project_group_index.py
index 770715759ed2a1..3fcc04c6e73ab6 100644
--- a/tests/snuba/api/endpoints/test_project_group_index.py
+++ b/tests/snuba/api/endpoints/test_project_group_index.py
@@ -607,7 +607,6 @@ def test_self_assign_issue_next_release(self):
         activity = Activity.objects.get(
             group=group, type=ActivityType.SET_RESOLVED_IN_RELEASE.value
         )
-        assert activity.data is not None
         assert activity.data["version"] == ""
         with assume_test_silo_mode(SiloMode.CONTROL):
             uo1.delete()
@@ -683,7 +682,6 @@ def test_set_resolved_in_current_release(self):
         activity = Activity.objects.get(
             group=group, type=ActivityType.SET_RESOLVED_IN_RELEASE.value
         )
-        assert activity.data is not None
         assert activity.data["version"] == release.version
 
     def test_set_resolved_in_explicit_release(self):
@@ -724,7 +722,6 @@ def test_set_resolved_in_explicit_release(self):
         activity = Activity.objects.get(
             group=group, type=ActivityType.SET_RESOLVED_IN_RELEASE.value
         )
-        assert activity.data is not None
         assert activity.data["version"] == release.version
 
     def test_set_resolved_in_next_release(self):
@@ -763,7 +760,6 @@ def test_set_resolved_in_next_release(self):
         activity = Activity.objects.get(
             group=group, type=ActivityType.SET_RESOLVED_IN_RELEASE.value
         )
-        assert activity.data is not None
         assert activity.data["version"] == ""
 
     def test_set_resolved_in_next_release_legacy(self):
@@ -797,7 +793,6 @@ def test_set_resolved_in_next_release_legacy(self):
         activity = Activity.objects.get(
             group=group, type=ActivityType.SET_RESOLVED_IN_RELEASE.value
         )
-        assert activity.data is not None
         assert activity.data["version"] == ""
 
     @with_feature("organizations:resolve-in-upcoming-release")
@@ -837,7 +832,6 @@ def test_set_resolved_in_upcoming_release(self):
         activity = Activity.objects.get(
             group=group, type=ActivityType.SET_RESOLVED_IN_RELEASE.value
         )
-        assert activity.data is not None
         assert activity.data["version"] == ""
 
     def test_upcoming_release_flag_validation(self):
@@ -912,7 +906,6 @@ def test_set_resolved_in_explicit_commit_unreleased(self):
         ).exists()
 
         activity = Activity.objects.get(group=group, type=ActivityType.SET_RESOLVED_IN_COMMIT.value)
-        assert activity.data is not None
         assert activity.data["commit"] == commit.id
 
     def test_set_resolved_in_explicit_commit_released(self):
@@ -952,7 +945,6 @@ def test_set_resolved_in_explicit_commit_released(self):
         ).exists()
 
         activity = Activity.objects.get(group=group, type=ActivityType.SET_RESOLVED_IN_COMMIT.value)
-        assert activity.data is not None
         assert activity.data["commit"] == commit.id
 
         resolution = GroupResolution.objects.get(group=group)