The instance seems to be mostly right wing trolls. I know defederating is unpopular but I don't think much is to be lost in this case and it can save the mods some headaches.
Edit: the response on exploding-heads.com to my reporting of transphobia. Courtesy of the "second in command"
I don't think this is a satisfactory answer.
Anyway, what I said can be shortened to "everybody who is looking sees you as a hypocrite when you are doing this kind of activism which costs nothing".