Yeah, I won't say it's impossible or anything. I just think there's other reasonable explanations too.
Personally I just avoid mentioning China when I'm over there. lol It's easier to keep everything civil if you avoid naming names, and China is a particularly sore spot for them. You also can't forget that free speech is not a foundational part of their ideology like it is ours. They're more about seizing the means of production than the free contesting of ideas.
It does feel a little like walking on eggshells.
The spamming troll made me realize, we don't have any sort of posting limits? Limiting contributions to something humanly possible, like say, one every thirty seconds, would help cut down on that stuff. Maybe could base it on IP address, so multiple accounts couldn't be used to partially get around it?
Most people would never even realize the limit is there.