What's weird is prior to the meltdown over trans people she was obnoxiously progressive. Constantly retconning characters via tweets to make them more inclusive, when it has absolutely nothing to do with the story being told.
I have no problem at all with Dumpledore being gay and Hermione being black. I think including marginalized people in story telling is fantastic.
But that's absolutely not how these characters were written. She just kinda said that's the way it was and left it at that. Because the characters weren't originally written with that in mind it added no context, and brought nothing to light about these characters that night have been missed. That's not inclusivity. It's pandering. And she just would not stop doing it.