Citation needed. How much value does intimate knowledge of individual preference and habit have for psyops? How much of an advantage does China gain when they convince a democratic electorate that their actions are no big deal?
If China had it's way, they would not 'invade' Taiwan either, we would wake up one day and realize the process happened over 20 years and that Taiwan is under CCP control.
And that Vietnam, Singapore, Philippines, Japan, Korea are also subject to arbitrary power of the CCP a little bit like Lukashenko in Belarus is a stooge of Putin.
That's what the surveillance is for.
However, in whatever state you live in, your local government is far and away the most likely to care about your habits, to want to convince you to vote against your interests, to accuse you based on flimsy evidence etc. A foreign country poses nowhere near the same risk, even if it's the worse regime in history and you live in the best.
China has a Dictator, a total absence of a Justice System, total surveillance and censorship, and large swaths of the population of some regions in concentration camps, a large number of individual dedicated to holding in place that apparatus.
Meanwhile you're free to walk down the street and tell the US President he's an idiot and you're not going anywhere without the entire US media knowing about it if they want to put public eyes on it for the sake of your own rights. There are laws, all sorts of controls, Judicial oversight, yada yada.
As if that even needs to be said.