I don't think the entire idea is completely unsalvageable, but I've come to believe that it's better to limit the "viral" nature of moderation decisions, at least without strong notification, appeal, and oversight—and that the more appeal and oversight you have, the more abusable by bad actors your moderation process is. it's a tough bind.
(Default hops is 3, and most people use 3, so functionally this doesn't matter much. But if it was 5 or something, this would matter a lot. It's also sort of why people recommend unfollowing pubs once you've built up a network you trust -- because pubs will connect to anybody who requests it, so even users with no redeeming qualities who no human being would choose to follow, like dedicate griefer accounts, will end up being replicated by a pub.)