> I feel that part of the problem with WordPress and Rails is that that there is no model for replacing poor governance.

But Eugen Rochko was not replaced. He voluntarily stepped down from power because he was personally dissatisfied in the leadership role. Nobody was calling for his ouster. He could have continued as leader of Mastodon for many more years with nobody batting an eyelash. So again, Mastodon is a red herring.