Repeating this again: Yes, Harry Potter's author is a total anti-trans scumbag but that doesn't mean you have to pretend you didn't like the books growing up. You can say "I liked the books/films growing up but I moved on after finding out she's a shithead." It's fine, real friends don't chop your head off just because you didn't have the foresight to dislike or avoid the books growing up.

Michiru Yamane turned out to be a Trump-supporting conspiracy theorist, and yet I don't see people who know about this scrambling to retcon their positive opinions of her Castlevania soundtracks and go "actually, Reincarnated Soul and Iron Blue Intention are ear poison"