> Saying kids have to have access to books about how to perform bj's is a losing argument.

This isn't the argument, which is why it didn't lose. The argument is that the law was too broad and banned books that have long been considered to have great literary value. Did you see the list of books that have been banned as a result of this bill in the article? The bill does not allow consideration of literary value (a.k.a. the rest of the book, and its role in history), it only considers some sexual content in the book in isolation. It also applied to the entire school system, these books were being banned from high school libraries.