Earlier quoted context omitted.
Nice strawman you constructed. However, it was burning the moment you put it together. Its easy to say that pornography and smut are the only things banned in school and public libraries, as your claim. But thats easily demonstrably false. One only need to look at the American Library Association's banned list https://www.ala.org/bbooks/frequentlychallengedbooks/top10 What do we see? Descriptions of sexual acts? Well…
https://archive.org/details/gender-queer-a-memoir-by-maia-ko...
This is besides the point, but did you read the surrounding pages? The main character doesn't advocate for sexual activity of any kind, they actually seem to lose interest and proceed to display positive emotional communication skills by telling their partner of their disinterest?