This makes me wonder if discussions of reparations for slavery have fueled a similar fire in the United States. In my mind, criticism of past wrongs would lead to resentment by those criticized. I'm not in any way saying that discussing past harms has caused a resurgence of these issues, but I do wonder if there is some relationship.
We need information to make decisions. One side providing all the info leads to biased thoughts. It's exactly what's happening here in the US. People pick their news source (CNN, FOX, etc) and gradually become polarized to think one way.
The lesson here is: Learn about the counter argument. You should find it isn't as crazy as people tell you.
Most people are able to live normal lives where the government doesn't really have a massive influence. Even if it does, it's usually in terms of infrastructure development (transportation, housing, etc.), which can be done much more rapidly than in, say, the US (look at high-speed rail deployment in China over the past decade or so).
Plus, what's the alternative? China would be trading their fast-paced economic expansion and massive infrastructure investments (necessary to keep pace with the expanding number of people in China) for more... freedom?
And I think that's really the key here. The Chinese government is NOT incompetent and they're able to more than adequately provide for their citizens' needs. So, who would WANT a revolution?
Staying silent, or defending their tantrums, is what allows the Chinese to make it impossible for Macs sold in China to display Taiwan's national flag, to justify Mariott firing an employee for liking a tweet thanking the company for listing certain countries on their website, to force Leica to remove their ad and issue an apology over nothing, etc.