These things can be weaponized by changing the definitions so I'm not as inclined to trust a model that could be trained by those with ulterior motives. But to your question: There were books available to me in late grade school and middle school that had sexual acts and they're (rightfully in my opinion) considered classics or at least important reading. Some parents might consider those inappropriate and if they had their way I might not have been exposed to those works until much later when their impact would have been vastly decreased.

This idea that sex or sexual acts are inherently "bad" is puritanical thinking and doesn't really serve anyone's interests who has to participate in the real world where sex is part of the fabric of our existence. If parents want to impose a puritanical mindset on to their children that's their business and maybe a compromise is that they should be able to exclude their kids from reading certain material just like they can excuse them from learning sex ed.