This is exactly it. So many of the very people she hates were the ones who loved her stuff the most. Queer people were the backbone of the HP fandom, so her embracing evil was that much more of a betrayal. If the people who wrote fanfiction, cosplayed, and engaged with the community the hardest can walk away from it, normies can too. It is not some monumental ask, nor is it one that a lot of the people demanding it haven't done themselves.