You don't know this. You can't know this. The only reason you believe this is you listen to the New York Times etc etc. People who listen to Faux News have the exact opposite opinion.
Admittedly, in the US you and I have a lot more ability to make rational judgements based on our own experience. But in China, you have none. Zero, zip, nada, none. You just believe what the Establishment wants you to believe. This is not any sort of basis for factual understanding.
The establishment has a long well-documented history of lying to the public. If you still want to believe them, what can I say ? It's not intellectually supportable. You're doing it because you want to, not because you have any evidence or even understand the situation.
Censorship is censorship. Either you believe in it or you don't. In fact, if you look at it rationally, there are good reasons for a degree of censorship. it's the amount that should be in question, not the principle.