The same thing happens there though-- the very same people who would be championing to remove Rowling's hypothetical math book, because of her association with writing fiction books that involve institutionalized witchcraft--- are THE VERY SAME PEOPLE who cry bitter, bitter tears about how their religious beliefs get them ostracized from certain circles, such as academia. (because of its batshit crackpottery concerning denial of very empirical findings about ancient history, or science.)
They JUST DON'T GET IT that they are hypocrites.
They can only see the censorship when it is THEM being pushed out/silenced.
It never occurs to them that Rowling can write a perfectly reasonable, and good instruction manual on Mathematics, without involving magic and sorcery, in exactly the same way that they want to be seen as credible in being able to separate their personal faith with the rigor of the sciences, and present good papers.
So, they demonize hypothetical Rowling's work, while decrying why their own works get maligned.
The reality that if they stopped being dicks, people would be less apt to be dicks to them, never sinks in. they only see the censorship against themselves, not the kind they commit against others.
This is not just true of the christian conservative demographic, the left is also guilty-- see again, "hateful speech." Really, it is anything that is "Does not want!!", where "Does not want!!" is rendered equivalent to "Has negative value, and anyone who disagrees is wrong on principle, and thus bad too!"