Gumroad stopped allowing sexually explicit content a year and a half ago.
https://gumroad.com/help/article/156-gumroad-and-adult-content
I’ve heard their draconic definition of fetish comes down heavily on works with female models, fat characters, queer creators. Tho, really, I’m not sure how strict they are. The creators I was following there pulled out when the new restrictions suddenly took affect.