It’s understandable racist skinheads ruin it for everyone. Dead Kennedys even wrong a song for them, nazi punks fuck off.

https://youtu.be/-MkRuV0aCcI (lyrics are in the yt video description)

As for the servers, there are quite a few that are personal servers for themselves, friends and/or family, or specific hobbies. It’s one of my favorite things about the fediverse. Anyone can create an instance for whatever they choose. It’s great.