The question is of degree. YouTube and other websites have been and will continue to be blocked or censored provided they do not adhere to local laws or sentiments. In the place of China you should also include Thailand (nothing derogatory about the king), Turkey (don't mention the "genocide" against Armenians, most of the middle east (porn), UK (knives and anything deemed pro-terrorist or deemed as such), Germany (no holocaust denial). The list goes on and on. This idea unfortunately mostly by westerners, that they should somehow "subvert" any country that doesn't agree with their views or actions is nothing but a hangover from colonialist attitudes of supremacy.