That's the thing tho, they are doing these bannings at low level places like those to get those books already out of as many places as they can while maintaining a veil of legitimacy as they haven't done in a national level, therefore they aren't "banning bonds" just like you're argumentive, but the effect is not too dissimilar from banning them at a federal level, less people are getting access to critical information that allows them to learn of how evil the government has been and currently is