I'm not sure if I've misunderstood your position, but you seem to think that only subject matter experts should be able to criticize a government. This seems absolutely crazy to me, and I think you'll find that most Westerners share my view.
If this was how it worked, the government would be able to claim that nobody is expert enough to criticize, and it would be able to do whatever it wanted to its citizens. Kind of like how the government works in China, and exactly like what's happening here.
"You're not an expert. You don't understand. You're not from here. We do things differently here." The entire international community has criticized China's treatment of their Uighur population. Yes, China does human rights differently. We know.
Western governments are accountable to their citizens, expert or not. If the people think that something is unacceptable, they are expected to express these thoughts through the Democratic process, and then the government is required to change its behavior, even if the people were "wrong" in some expertly measurable way.
The culture in the West sees anything less than this as immoral or corrupt, and we generally don't consider things like "social orderliness" to be worth sacrificing Democratic ideals for, as seems to happen in China.
It's not a matter of talking to more first generation Chinese to get a clearer perspective. I've spoken with ethnic Chinese people who still live and work in China, and I understand their perspective quite well. Most of them have understood my perspective too. The issue is not that we don't understand each other, it's that our perspectives and expectations from other people and from government are different in some pretty significant ways.