When we were in school, people used to moderate our books too. We’d get them with pages torn out and words crossed over.
Same for books and productions that get endorsements from Rabbanim. They obviously read it over before it goes to print to make sure it’s okay. Who gave them the heter to read these things with the possibility of coming across things that are questionable?
That’s why not every random person who wishes to be moderator is chosen.