I'm far underread for this discussion but I think for most americans the mental/superstructural blocks to over come are the structure of race and whiteness and the perception of everyone as consumers.

I feel like this is a very boring answer, but it still needs to be given:

I think the main issue here is that you are starting from a lens of what borders on racial essentialism. The different historical examples you give have wildly different contexts (for example, the occupation of Korea being much more heavily military than the others you list, while white South Africans were overwhelmingly civilians -- whatever else might be said of them). I think the greater through line here is the one that any Marxist would point to first: class. Fundamentally, these societies of brutally exploited underclasses were setting themselves up for revolt by the very fact of their exploitation itself. What sets the US apart from these societies then is not the racial divide (though of course US society is highly racialized and it factors in to things) but that it is not primarily the site of the exploitation it carries out, i.e. it is imperialist, and therefore is able to temporarily "circumvent" the consequences of the basic principles of social stratification that all capitalist systems are bound by.

As imperial decline accelerates, more and more of the population you identified as settler (idk where you got 70% specifically from, but that doesn't really matter) is going to find themselves on the "brutally exploited" side of the above dichotomy, and from there, and with the necessary construction of dual power, it should not be difficult at all for them to be turned to the side of the colonized population as fellow exploited people.

So I believe that, in the framework of Mao's metaphor, the American people are still our God, and the mountains are capitalism and imperialism.