I, though, for example love horror stories. Most of them are definitely mature, because all those points are tropes and themes and tools used in them. I don't need all my reads to be readable by teens, have no problem with nudity or swearing, or sex, even (I think sex tends to be written kind of ehh, teenagery? Edgy? Not always, but...). The thing that disturbs my reads are stories that show racism, sexism, homophobia, etc. under a good light, advocating for them. Those are the only ones I would put censure upon. The rest just need a propper tagging system, which I thing we all have already, here and there? Adult readership should be mature (hehe) enough to know what the're buying and what not to show or buy for their kids. Just my opinion. Censorship tend to be ridiculous, uncivil and usualy easy to cheat when there's actual intention to push it through it.