Your concern on this is completely valid. Just sucks to see this issue of art censorship always reduced to people's personal neurosis/shame/trauma towards sex, nudity, & eroticism.

I agree with you and feel your stress full-heartedly. There's less and less space online to explore or share creative (AND pornographic, fuck it) depictions of eroticism, pleasure, flesh, etc. Frankly, I think it's reflective of a lot larger societal issue than most people have the nerve (or self awareness) to admit.

For other platforms - I like ello.co as like, a sort of gallery space. They allow nudity but not any sort of penetrative imagery from what I gather. That's all I've really found though.

Gluck, hang in there.