My point is that your entire argument is being made in bad faith. I've never read the books at issue, but I need a hell of a lot more context before I'm going to say "oh shit, the author of this one book just described a vagina getting wet. Maybe the book-banning group that actively lobbies for Slaughterhouse V to be removed from high school libraries is actually reasonable."
You're being extremely quick to call things that you have not read "pornographic", "filth", "smut", and "of no literary value". These are award winning books that other people have found comfort and meaning in.
Most books requested for removal in these cases are from high school libraries, so I'm not as concerned about elementary school kids as you are and believe that is
usually a false flag designed to fear monger.
Here is a list of books that were requested for removal by Moms for Liberty in Arkansas with a column for the current availability in the school system in question. Almost all the "smut" being requested for removal is only available for high schoolers. Also note that most of these books are not being asked to be removed for any sexual reason.
If my high school aged student read a book about teenagers having sex in high school, I'd probably shrug to be honest. If I found out my younger child was actively seeking out books on sex or other mature topics by checking out a book from the library, I'd probably want to discuss it with them and make sure I'm providing proper context. I might even tell them that this particular book isn't appropriate and remove it. I wouldn't dream of removing it as an option for other children who are looking for answers or presume that my take on poltics/race/sexuality is some sort of "truth" that needs protecting from alternative ideas.