Many young Chinese who were educated in the US feel this way, so it's not a generational thing. This is a cultural tradition stretching back many thousands of years. The world view of a person from China is very different than that of an American.
Also, consider that an AI researcher returning to China is likely going to be in the top 1% of society. Dictatorial societies tend to be pretty good for the people at the top. The Chinese startup market is hotter than the US at this point too; and it's basically restricted to people born in a handful of Chinese cities. The Chinese government intentionally stacks the deck to get them to return.
All things considered, the US looks really bad right now internationally. We have vast military power, and our leader is a child elected on a wave of nationalist populism. This has happened before in recent history, and it didn't end well.
It seems in China excellence and competition are truly appreciated, from family, school all the way to the government, even though some of them have to use VPN to use Google.
China sets a national goal each five years, education first has always be the first priority for the society, back in USA, we're debating how to borrow more debt, how to make sure people can choose no-gender(neither male or female), how to remove ranking from school because competition there hurt our 18-year-old-KID's self-esteem,etc, what a joke, we're doomed.
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