Why is the American right so infatuated with toxic frontier "cowboy culture"?

Anonymous
A culture rooted in manifest destiny (the American version of "lebensraum") which is what their principal of rugged individualism is rooted in.

And here's the thing, they complain about how the left compares them to Nazis yet they espouse principles that have the same ideological foundation.
Why is the American right so infatuated with toxic frontier "cowboy culture"?
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