That's very unfortunate to hear - I agree that there it probably a different core philosophy between Lemmy and Mastodon (I can't speak to other platforms), where Lemmy is considered more of a "public bulletin board" where all content can be read by anyone, and most measures against harassement or other bad behaviour is left to the mod/admin teams (insert long rant about small instances being a good thing here).
This is the first I've heard of blocked users being able to vote on stuff, though.
Okay, I think this is fun. It's always nice when the characters have slightly different motivations, which could put them at cross-purposes with each other.