MP3Tag + MusicBrainz Picard. I use MP3Tag to set the ID3 tags and picard to move them into the folder structure I want.

It takes a couple hours to set everything up, but I can’t rely on Musicbrainz alone because my music has no metadata on Musicbrainz, so I set the tags myself.

That’s fair. I’m making the comparison to other hobbies. If someone is not interested in roller skating, but decides to try it out because one of their friends really likes it and invites them, they may find they enjoy it… or not, which in that case they won’t go again, which is fine. Alternatively, they find a new hobby they enjoy, and selfhosting could give skills that turn into a potential career, but that’s if they really enjoy it. I don’t think it’s uncommon for friend groups to have outsiders (me) and “force” them into trying new things, but maybe my comparison doesn’t hold up here as this is a bit less about socializing.