I don’t believe in limits or censorship. Public spaces can’t cater to the whims/preferences of a narrow group. Just because you don’t want your child exposed to LGBT themes, doesn’t mean you should be able to prevent others from accessing those materials.
When my kids were younger, we didn’t restrict their reading materals. There was one instance where my daughter started to read a horror novel from our shelves that she was probably too young to read. But we let her figure it out.
With the same daughter, in 7th grade she had some book on queens of England (I don’t think it was part of the Royal Diaries but it might have) that she let a friend borrow. The friend’s mom looked at part and was so offended that she confiscated the book and didn’t even give it back to us.