This is a huge part of it, but it’s also the fact that none of the other players did anything to take action against these bad actors. As you mention yourself, they weren’t removed (Save for maybe Morsteth once his political favour ran out), they quit on their own after a while. They were so wholly terrible at removing bad actors from their groups, that it still feels like flipping a coin on bullying/harassment to interact with these people. Even if those who remain aren’t bad or even took part in it at all, clinging so desperately to their names and titles has come with an association and they refuse to make up for what that entails.