Fair enough, but it's just not impacting blahaj users. It's not like a private forum on a server somewhere. You're participating in a big intertwined network, but then reserving the right to run some sections of it according to these super-strict (and to me pretty arbitrary) rules, and so you're winding up with a situation where blahaj people can talk to off-blahaj people, on some blahaj community, and some off-blahaj person can see it and respond reasonably and then get attacked, falsely accused of being transphobic, and then have it escalate into this thing where (for example, in this exact post) they're getting kicked off being allowed to run their own forums on some whole different instance, because now they're officially "bad" with the way they violated the dictates of the blahaj lords as part of the evidence.
If blahaj was its own private area, then sure. "Only come here if you're okay with the rules." That makes sense. But they're participating in a shared network, storing their messages on other people's servers, having posts replicated into random other sections for random people to see them, but then retreating to the "but this part of the space is MINE!" standpoint when anyone tries to raise any kind of objection to how they set up the rules for it. And also leveling this bigotry accusation if anyone doesn't obey how they want the interaction to go.