That’s a pretty vague question; what kind of NSFW “stuff” are you looking to post?
However, if you’re talking about art, then Slushe is a fairly nice NSFW art site (though it may be abandoned by it’s creators, last blog activity was over a year ago) that varied artists post plenty of stuff regularly.
Could you elaborate what you mean by “doesn’t have Wayland”?
Krita works fine on Wayland (I just finished using it to scribble out a comic strip, in fact), but is there something specific you’re finding that is broken?