I think reasonable people can disagree about the extent to which removing a book from the required reading list would have such a chilling effect.
In any event, can we agree that it's misleading to describe what happened simply as "banning" without further qualification? As an example of a more accurate description, I would point to Reason's article on the subject [1]:
> Tennessee School Board Pulls Maus From Eighth-Grade Curriculum
> A grim sign of the bureaucratic mentality controlling public education
[1] https://reason.com/2022/01/27/tennessee-school-board-pulls-m...