As does turkey or Germany or whoever when it comes to US socials operating in their countries.
All you need is a court order and all socials will delete whatever content is requested.
No, this is about kowtowing to the new powers that be.
China's rule of law is generally very weak. "Ultimately, no matter what the laws say, it would be difficult for any Chinese citizen or company to meaningfully resist a direct request from security forces or law enforcement, and the courts cannot be relied on to provide a remedy." https://www.chinalawtranslate.com/en/what-the-national-intel...
This is particularly obvious with the number of senior executives of key Chinese companies who have simply disappeared, at least temporarily, when they displeased the government. Again, nothing comparable in the USA (yet).