Lol - Immich is one of those stacks that I let Watchtower auto-upgrade. I don’t consider it mission critical if it breaks and it takes me a day or so to notice it (all my photos and videos are also backed up using Syncthing).
I’ve gotten used to just going to the repo if the error message for the container doesn’t immediately lead me to the fix.
Each to their own. Immich devs themselves strongly recommend not relying on Immich as a backup solution.
I don’t, therefore I don’t consider it critical enough to worry about.