Noted.
I had an experience many years ago (I think it was 02, might have been 04) while volunteering as a poll worker during a Democratic primary. One of my fellow volunteers was a woman in her late 60s (who, as it turned out, was a close relative of one of the few Democrats who'd held elective office in my neck of the woods) whom I talked to some during the proceedings. After the polls closed and we wrapped up I offered to drive her home, as she was stuck waiting for a ride. The polling place was located in an area where Latino migration was concentrated, and we passed an old elementary school which had been reconstituted as a Head Start facility that housed various programs supporting ESL and other services geared toward children of the migrant population. As we're driving by it, the lady says "Damn, we'll do for the Julios but we won't do for our own people."
Sometimes it's surprising where these sentiments crop up.
We'll definitely see how many of those folks—disaffected or cynical for one reason or another, whether economic, nativist, cultural, or some combination—Trump can attract in the general. But that's a question for the general election. In the meantime, you seem a tad sensitive about my opinions with regard to Republicans while Republicans are voting in Republican primaries.
Political ideology doesn't inoculate you from bad ideas, rationalizations, wish fulfillments, and confirmation bias. I've seen all of the above from my liberal friends, and engaged in them myself, I'm sure. On the issue of Trump and his appeal, you really seem to want to have it both ways, though. Hillary is history's greatest monster, and Trump is a product of America's revulsion with liberal academia (and that annoying lefty kid in class), and probably being voted for by people who would otherwise be voting in Democratic primaries.
I mean, first it was the bipartisan consensus on trade and immigration—and I actually buy that point of view, in terms of lower middle-class alienation from party politics. There's legit blame for large swathes of both parties. Now it's the so-called "culture war," per that Ben Domenech piece you posted. That's a much harder sell for me. One way or another, though, the common theme is that you're trying to tell me that "we" (we pinko culture-war-winnin' christian-hatin' know-it-all elitists) are responsible for a plurality of R primary voters buying what Donald Trump is selling.