I did it again, typed a bunch of tit-for-tat stuff and then deleted it. Here's my attempt to get to the heart of the matter (partially from elsewhere in this thread):
If blahaj admins would just be straight-up about it, and say "Listen. This dragon person is clearly a troll, and we're banning them for that reason, but we don't want to allow people to decide pronouns on a case-by-case basis. In this case, the rule produces a stupid result, but that's the rule we settled on and we have good reasons not to bend it in any circumstance or have to have long debates about this stuff every week, so please respect it or we will ban you," I don't think there would be any kind of issue. That's a decent and human-to-human interaction that gets across the point and still respects the good reasons for the rule. To me (and maybe you may disagree with this), it seemed like instead of that they said "HOW DARE YOU MISGENDER THIS PERSON YOU TRANSPHOBIA ADJACENT BIGOT" and then went on to (as in the current post) continue to whine about how horrible it was that anyone was trying to point out that (a) the user in question was clearly a transphobic troll (b) blahaj going to bat for them was ridiculous. And, you still constantly talk about how those people were wrong, and bigoted, and shouldn't be talking that way even off the blahaj instance.
Same for banning PJ. It would be fine if you said "He was kind of pushy about trying to make his point and although he clearly wasn't coming from any hostile place, we tried explaining the rules and he kept doing it, so we banned him." But no. It's "repeatedly and deliberately doing harm," complaining about him trying to justify himself off-instance after the ban like he is required to just shut up and take it instead of voicing his side of the story, "positioning themselves as the arbiter of other folks validity and identity," all this apocalyptic stuff.
I mean... aren't you positioning yourself as the arbiter of other folks' validity and identity? You positioned yourself as the protector of LGBTQ+ people but you have no problem booting them from your space if they don't adhere to your precise details of what that means. (Like, for example, protecting the space from obviously-transphobic trolls, I feel like some of them would think you should be proactive about.) When you boot them for not adhering to that, isn't that... gatekeeping? Or no?