> It's the PRC control part that's the key here though. There's nothing banning even blatantly pro-PRC content on other platforms. You can find plenty of tankies praising China over the US to high heaven on places like Reddit.

Then it's just virtue signaling. If the message is not a problem, then who says that message is irrelevant.

Note: to be clear, I'm neither a tankie nor in any other way supportive of PRC policies. They're a horrible genocidal dictatorial regime with imperialist tendencies who are propping up other similarly horrible regimes like Russia or North Korea.