This can only happen in two cases. The fediverse has many instances and thus can survive a single instance going mad, for lack of a better term. The guy behind Tildes seems like a nice enough fella, so he'd fit the other mold - benevolent dictator. I know less about Squables but assume for the same of argument it's the same thing.
Reddit's CEO has shown that he's a dictator, but not the benevolent kind. So why does he and his company deserve anymore help from us? Why not put our efforts into places where we will be treated and respected better.