Sure, but the premise here is that the government should be able to control what people are allowed to discuss using online platforms. I don’t necessarily disagree with the notion of limiting harmful speech, but it’s worth pointing out that this is precisely the kind of thing westerners like to criticize China for doing saying that Chinese government is authoritarian.
If we accept that it is reasonable for the government to limit free speech when it’s deemed harmful and to ban platforms that don’t comply then we have to admit that China’s approach to controlling online speech was fundamentally correct. It certainly could be argued that it helped avoid the kind of social instability we now see in the west.
Germany has a democracy, and like you said, harmful speech can be limited. I don’t yet have a clear stance on this specific issue though. I tend to think that it’s unpractical and an overreach by the government. Mostly because they don’t understand the tech and the problem enough.
China has a democracy that clearly functions a lot better than German democracy given that public satisfaction is far higher than any western government. Harvard research center study of long-term public opinion survey finds extremely high government approval. People who actually live in China say their country is democratic.
edit: it will never cease to amaze me how westerners form strong opinions about China without having the first clue about it. Thinking that you understand a country better than people who actually live there shows an incredible amount of chauvinism.