You're being downvoted but your analysis is correct. In this case, the article is meant to combine two clickbait antagonists ("book bans" and "ChatGPT"). Like you mention, there's a finite amount of both physical space and time for "books" in a library and curriculum. I'm not sure if people are imagining that both of these things are infinite, but decisions will eventually have to be made about what to include or not. "Book bans" is a good sorting phrase, because people like to imagine (as some sort of LARP) that their political enemies are the Nazis from Indiana Jones and the Last Crusade, marching around in a circle lighting otherwise reasonable things on fire. Doing this makes it easier to bully people in the middle to agreeing with you, and less easy to actually take a dispassionate approach to analysis of the situation.