> Immich solves the wrong problem. I just want the household to share photos

That is a totally reasonable view. But others have different preferences. I, for example, do not want to share all my photos with Google, govvies and anyone else they leak them to.

So I self host, back up and share my files with the family. I can always dump what I want to insta, etc. but it is my choice what to share, picture by picture, with default "off". And have no dark patterns trying to catch a finger accidentally hitting a "back up to cloud" for the full album.

That, to me, is a big deal, worth dealing with occasional IT hassles for. Which is just a personal preference.