Edit: a world without dissent seems so ... pointless
Don't you think that a big number of them go to the West with full knowledge of that?
Western education is still only affordable to a fraction of 1% of Chinese population, with many of them being CPC members themselves.
I had a curious case when I was studying in Canada: one very quiet girl, always wearing a tracksuit, always telling everybody her being a daughter of ordinary daylaborers who saved all their life to send her to the West.
She was one of few Chinese students we actually believed being who she claimed she was, and not a son/daughter of some elite, concealing family background. Then, by an accident, some son of a Chinese military officer outed her as a daughter of a 2 star general when he made advances on her.
Over the years, many mainland-Chinese university students (and tourists!) have been granted the funds and visa-arrangements to visit these other countries, specifically because they were known to be “patriots” of China—and moreover, to demonstrate “faith” in the Chinese government in the face of evidence against its character.
Until recently, you could spot tour-buses of these folks often in Hong Kong tourist destinations. The tours were always led by mainland-Chinese tour-guides, never locals.
I imagine the same applies to foreign University programs, but with even stricter selection criteria, such that the students won’t need a handler.
(The “nice” thing about the social-credit-score system is that it replaces all this manual background-checking work with a default-allow system with continuous blackballing. China can now portray itself as a country that allows its citizens to travel freely, while only restricting “those with criminal intent”—while in practice allowing only the same people to travel that it otherwise would have under manual background-checking.)
A Chinese friend of mine has said that, nowadays, most of the overseas Chinese students are rich kids who didn't make the cut in the Chinese education system. They're less curious about the world than previous generations of Chinese students, and have more to gain from the current Chinese system, too.
My friend comes from one of those previous generations, was more curious about the world, and it still took her many years to get over the propaganda.
I happen to agree with you. I'm just responding to the subtext in your post that seems to imply that we still have freedom to dissent.[2]
[1] This is my reminder that I'm running late on my regular purging of social media accounts. To try to at least vaguely preserve my sense of anonymity, which I'm sure is much more illusory than real.
[2] I have to point out, given that this current strain of criticism is also politically polarized, that I am a liberal. I just happen to be of the generation of liberals for whom phrases like "free speech extremist" are a betrayal of so much of what we stood/stand for.
There was a series of books I read many years ago - The Dorsai by Gordon R Dickson, in that humanity split off into a bunch of extremists and we all flew off to our own planets, religious extremists, scientists, soldiers etc, I keep thinking of that more lately, maybe we'll just have to wait for Musk, Bezos and Branson to build some more ships.