To me, there is little difference between the terms "real hacker" and "real American." Both exist for one purpose: to make the elitist feel good about themselves while giving them a chance to look down on plebes.
Oh, but "real American" serves the opposite purpose: the whip the ignorant plebes into a frenzy of tribal pride in order to justify policies that serve the elite.
Of course, the question, and the issue of where "real American" comes from is: which elite? "Real American" talk is when the capitalist class talks to the blue-collar working class and demonizes the white-collar working class, the intelligentsia, the professional working class, academia, the culture industry, and any petite bourgeoisie associated with the aforementioned.