I have to say that there's a level of irony in asking for bans and central controls on content on a platform that in its very nature decentralized and supposed to be empowering.
There isn't any irony. That's the whole point of the decentralization - it empowers everybody to be part of the communities they wish to be in, and not participate in those they disagree with. We have the power to leave any instance where we disagree with the admins and move to a new one.