Yea, as a trans person in the UK, JK Rowling is a big concern. Legislation was recently passed saying everyone has to use the public bathrooms of their AGAB; the main pressure group pushing for this received over a quarter of their funding from JK Rowling. On a more personal level, she's essentially the reason my parents are ... as they are in regards to trans issues. They, like a whole load of other people, first encountered the whole thing through reading what JK Rowling had to say about it, as a profiling public figure, so it gets fixed in people's minds as the first thing they learn and it gives a whole massive platform for transphobes to air their views. It's been ... interesting.
She keeps getting more and more popular and then the money goes to fund support for anti-trans legislation and it's all kind of complicated. One of my autistic trans friends has a long-term special interest in Harry Potter and has a really complicated relationship with it as a result.
Supporting LGBTQ+ people is great! Thank you for being better than, like, 50% of the population, genuinely. No one's going to stop you doing what you want to do, and no one's trying to "convert" you or try and crush all the joy out of living. It can be good to learn about the different effects of hobbies, though, but if we stopped everything that contributed to climate change (for example), we'd have to stop respiring. It can just be good to learn, though.