I've recently had to unfriend a couple of people over this issue. One in particular is an autistic woman in her late 40s who lives for Harry Potter fandom. She's done out her whole house in a Hogwarts theme, identifies as a Hufflepuff
, reposts weird "headcanon" stuff from Tumblr at least 15 times per day etc. She is also very firmly on the TWAW side.
Her choices are to either dissociate herself from an identity that she's spent the last 20 years or so immersed in, not to mention having to redecorate, or denounce JKR and pretend that her creation somehow has nothing to do with her. The latter option requires a lot more cognitive dissonance than I suspect she's capable of, but that's the route she's gone down anyway. I was really sad that it came to a parting of the ways, but I wasn't able to continue seeing the daily stream of anti-terf stuff from her, and she isn't really someone you can argue nuance with, so that was what happened.
It's beyond me how people this intolerant can't see the irony in their calling other people bigots.