68
Steam may now remove "content that may violate the rules and standards set forth by Steam’s payment processors and related card networks and banks, or internet network providers. In particular, certain kinds of adult only content."
So far there has been a crackdown on incest games.
Recently in the news, payment processors forced Fansly to ban substance use, furry content, hypnosis, and more. So I'm sorry 
and 
gang but I implore you to do some critical thinking and read history. There will sadly have to be a queer/pervert united front.
Valve could easily just go this route and extend this to be a service for the entire industry, and be almost universally lauded for saving everyone while simultaneously ratcheting their monopoly up a few notches.
Or, they could just do nothing and let the money printer keep flowing indefinitely, so it's just gonna be that.
I could see them making the attempt. They are the company that is bruteforcing Linux into becoming a legitimate consumer operating system