I think censoring, as is now, is pretty much reserved to things that may lead to public or children "harm" like gore, torture, sex, drug promotion, nudity and promotion of "modern Western ideologies" if you know what I mean.
Or topics that are sensitive to the state or that could lead to war, like subversion, rumors, military stuff , secret developments (like lithography machines) or territorial integrity.
I don't think they are concerned in censoring every crap random people don't like, unless there is enough public uproar. Banning everything that random people may not like is ridiculous, especially topics of events that occurred 500 years ago in fictional setting, they are so many things that random people don't like that nothing could be make.