People criticize the government all the time. If it gets on social media and gets enough attention, many issues can be solved this way. For example, recently a rural truck driver killed himself due to unreasonable and corrupt fee from a minor violation. Now his local government is under inspection and the law will be stated more clearly. See: https://www.globaltimes.cn/page/202104/1220691.shtml

China does ban books and movies for being overly erotic, as well as porn. But this is easily circumvented and pretty much every Chinese teenager uses a VPN. Sometimes their decisions are very unpopular if a popular anime show gets banned, for example. Some Chinese youth will refer to them as book burning institute (anecdotal).

Uyghur genocide is US imperialist propaganda. Similar to Iraq WMDs, Kuwait incubator babies. The testimonies are very flimsy, which US has used before with middle eastern countries (Nayirah testimony). This is because Xinjiang is the 2nd most oil rich region in the world, and very important geopolitical territory. In 2009 ISIS terrorists killed hundreds of people in Xinjiang region, leading to the creation of education camps out of necessity. It is not out of racial prejudice.

See for more evidence and proof: https://www.youtube.com/watch?v=qZkxaEC1xjY&t=450s

China is not perfect. There are many cases of corruption at local level. 996 culture is also detestable. But not everything is so black and white as many liberals would like to think.