You know if they really, and I mean REALLY wanted to commit to appeasing the marginalized groups offended by Harry Potter and whatnot while not making it a banned topic entirely, there's a super easy solution. Allow topics that are only there to educate while forbidding any general positive discussion of the content itself. Basically the women sexualization thread, but specifically for the Harry Potter game. Because in a general thread, just having some threadmark talking about Rowling being a TERF is going to get a "okay... so about this quidditch quest..." reaction from the vast majority of the userbase. And that's why they'll never do it, because most people don't care.
Like what's their other excuse if they're truly committed to protecting those offended? People will just go elsewhere to discuss the game? Newsflash, they already do that with the shit you guys have banned. Sure, maybe discourse isn't booming elsewhere for shit like Criminal Girls, but you banned friggin Azur Lane, a multi-hundred million dollar franchise with a very large community and large cross-over with the currently exploding Vtuber market. The community can survive without you, just like Harry Potter will survive without you. Turning the site into a safe space for those genuinely affected like what you guys want people to believe you are will at the very least help them, but that's apparently not an option because you don't actually care when it's a big target (unless that big target is the biggest Youtuber or podcaster in the world).