I think it's great that they are being completely transparent about this.
That said, it's true that it's been almost two months and it seems that the some important issues there are still open and don't look especially active.
1. Update PS1 across all hosts to more clearly differentiate between hosts and environments https://gitlab.com/gitlab-com/infrastructure/issues/1094
2. Set PostgreSQL's max_connections to a sane value https://gitlab.com/gitlab-com/infrastructure/issues/1096
3. Move staging to the ARM environment https://gitlab.com/gitlab-com/infrastructure/issues/1100
4. Improve PostgreSQL replication documentation/runbooks https://gitlab.com/gitlab-com/infrastructure/issues/1103
5. Build Streaming Database Backup https://gitlab.com/gitlab-com/infrastructure/issues/1152
6. Assign an owner for data durability https://gitlab.com/gitlab-com/infrastructure/issues/1163
Detailed posts on that is how you begin to restore confidence.
No one is just going to take their word that "stuff are in place now".