Eh. Despite its problems, Harry Potter was fairly decent, especially in terms of having characters people care about. The world building was mid and there was bigotry against people outside of England, but there is a lot to like about it. It had a huge Fandom, many of whom were queer. That series earned her most of her wealth and popularity originally.
I think it was possible for her to have grown out of her conservative worldview if she was willing to. Unfortunately, it's hard to critically examine your beliefs. Her financial success probably affected the chances of her knowing queer people personally, which decreased her motivation to understand us. If she wasn't successful, she might have been a better person than she is now. Then again, maybe not. At least she wouldn't have caused as much harm.