Nobody is forcing them to read them? You don’t give them a copy of This Book is Gay (which is for high schoolers) and say read this f**king book. You say: this book is appropriate for XY age group, and if you don’t want to read it, then don’t. But don’t censor books for others. One family’s choices shouldn’t impact another’s.
So how do you defend banning Anne Franks’ diary, Song of Achilles, f**king Hop on Pop or Strega Nona? Or 99.9% of the other books?