Nobody stopped her from writing the book
Kid is in favor of censorship (an action by government) and bookburning.
In favor of books being in proper places.
Which is the issue here
What grade do you think is good for teaching about slavery?
What grade do you think is good for teaching about the holocaust?
What grade do you think is good for teaching about racism?
What grade do you think is good for teaching about sexism?
And at what ages/grades do you think kids start observing or experiencing any of those?!