UPS depends on usecase and on the stability of your electrical supply (which varies greatly from place to place). I just leave everything running and have it configured to restart automatically on power restore (if it fails, which it rarely does).

every day we stray further from god

As I see it, they are close to parity on the video/shows side, but the music thing on Jellyfin is severely lacking for me. PlexAmp and all the special mix and radio features are where it’s at for me, and so far I don’t know of an open alternative to that.