Ugh, the comments here are so full of BS and distortions of what really happened ๐คฆ
So here is the actual tl;dr: Some people asked the main Fosstodon admins what they think about having an openly Trump supporting, islamo- and transphobic moderator in their team and their response was "not here on Fosstodon and not our problem" (paraphrased, but close to their actual response).
That is pretty much like this scenario: lets say you get (credibly) informed about someone openly corrupt in your organization. If your response is: I have not seen them steal money in our organization and our processes should prevent any theft happening, then you are missing the forest for the trees.
If an organization can't get such basic governance issues right and prefers to hide behind a "neutral" stance on something that is really concerning to a large percentage of their members than they irrevocably lose a lot of trust and that is more than justified.