Immich is quite new clearly say they will have breaking changes.

immich.app/roadmap/

Stable release planned for this year

The updates are almost always packed with cool new features so I’d rather have an amazing app with a bit of maintenance then get something stable that lacks features. Especially when stability is now just around the corner.

As far as breaking changes go, in the year of me using the docker install I’ve had maybe 3 updates that required me to change things and each one was leas than 10 mins of work. Pretty basic stuff if you are actually on the selfhosted path