Most CHUDs didn't go to underfunded intercity schools with moldy textbooks. They went to well funded suburban middle class schools which, yeah are still US public schools, but still provide better educational opportunities than what most people in the world have.

The discussion of how bad American schools are is not complete without acknowledging the class and race based aspects of its inequality. We have some of the best schools in the industrialized world, and ALSO many of the worst (and of course our average is really bad), and that is by design.

Regarding the propaganda thing, you're 100% right. If someone has humanist or good political instincts, but believes a bunch of propaganda, that produces a wholly different set of political beliefs than someone who has chud political instincts and believes a bunch of propaganda. Those people can be deprogrammed in a way that chuds can't (although many chuds can and do deprogram themselves, for them it has to start with valuing empathy and equality, while the others can be reached more directly).