Lol, so now banning pornographers from your site equals to discriminating against the lgbtquerty community.
If you don't fit the target audience of the porn industry, you have to look elsewhere, like Patreon. The mainstream porn business does not cater to everyone. That's fine. The queer market is much smaller. But it also means its over-represented on platforms like Patreon, and thus particularly hit by this change.
So what exactly do you take issue with?
Except, you know, maybe Patreon doesn't want that.