The fediverse should be more resistant to this (I hope). The people in charge of instances are pretty comparable to super moderators since they both can control a lot of internet real estate. The fediverse's response to bad instance owners is to just switch to an instance that's run in a way that you like better. Or even better, make a new instance that's less bad!
If there's an instance with a problem super moderator, then the same solution should work right? Go elsewhere, or make a new magazine. If there's a single problem user dominating all communities in multiple instances, well. Time to start "@free.folk" or whatever lmao.