The Chinese Communist Party Is Setting Up Cells at Universities Across America
foreignpolicy.com
foreignpolicy.com
Consider a hypothetical title like "The Democratic Party Is Setting Up Cells in Alabama" and it becomes more obvious.
On the other hand, the presence of a domestic political party is a fundamentally different thing from the presence of a foreign entity working inside a sovereign entity like a state. Both the Republican and Democratic parties at least claim loyalty to the American people and its government and alignment with their interests.
Then they worked out they could still have most of that without the widespread poverty with fascism!
Your comment reminds me of the famous Mao quote "No investigation, no right to speak."
It is also about sending a message. If you do not quack like a duck, you will get into trouble.
An analogy is - there are plenty of undercover Mormons, Jews, etc who keep up appearances for their family's sake. They've found a different way that works for them, so why wouldn't these people?
tl;dr People are complex and if you are trying to control minds, often your efforts can backfire.
I believe in that, but I also think you're underestimating the effectiveness of social control when done competently, which IMO is what's China's doing.
You don't need to control people's minds, just their social acceptance and livelihood guarantee.