That might be consistent with Richard Hofstadter's "The Paranoid Style in American Politics."

And that's an interesting history you've written. I can see the connections to libertarianism. Mind you, I think that boorish borderer mentality would at least be exacerbated if not overtaken by those people's indulgence in the gospel narrative which implies that Christians are supposed to be persecuted and down and out.

This is the source of the perennial Fox News meme that there's a war on Christmas. Even if conservative Christians are obviously not persecuted in secular society but are tolerated despite their obnoxiousness, Christians want to feel like they're an endangered species, to feel more Christ-like. Otherwise, they might be struck by the fact that their Americanized Christendom is antithetical to what the Jesus of the gospels would have wanted.