The game wasn’t lynched though, it sold phenomenally well despite the commentary. There aren’t enough people paying attention to her statements to be in a position to make a conscious choice about her one way or the other. Most people just see harry potter and go “cool, new harry potter thing, I liked that as a kid/like it now, let’s give it a shot”. If it does get brought up in conversation I still find people are surprised when I say I don’t buy or participate in harry potter stuff because they genuinely don’t know, or think its massively overblown (coverage of her statements, not necessarily the content of them). We’re in a corner of a tiny pocket of the internet, even on Reddit.
TLDR This will make HBO tonnes of money from people who don’t care or don’t know about Rowling’s obsession with trans people, just like every other HP side project.
It’s up to you. You’re allowed to read/play/watch whatever you want, don’t let us internet weirdos (who might not even be real people) dissuade you. My wife loves harry potter but hates Rowling’s politics. That’s ok. You don’t have to justify your actions to anyone, least of all internet strangers! If you want a justification to play the game, as others have said, she’s already made her money from the game and won’t make more directly from you playing it, so she doesn’t benefit. Also, by a few accounts I’ve heard it’s a pretty mediocre game, so don’t feel like you’re missing out if you decide not to!