Ok, I did the heavy reading on the actual study that article is flogging. Surprise surprise, the article headline doesn't match the reality.
TL;DR They didn't actually ask Trump voters why they switched. Instead, they used statistical modeling to guess that white voters who agreed with "racially conservative policy" had a 10-50% probability to switch from being Obama voters to Trump voters.
On one hand, it's an interesting survey of other studies that show the effects of the Dem's focus on racial politics (emphasis added):
(Which incidentally explains how the alt-right came to be, a movement that felt they didn't belong in either party and reacts most strongly to racial politics and Obama's brand of internationalism. But hey, blaming Barry for bad identity politics makes you a Nazi or something.)
On the other hand, the entire measure of whether race had
anything to do with the decision of whites to switch from Obama to Trump
was not based on actually asking people why they switched. Instead, they took other survey questions about "acknowledging racism" and created a reductionist scale:
Even so, they can't draw a hard conclusion.
Well no shit. Next you'll be telling me that someone's views on feminism were mysteriously associated with voting for or against a candidate
It goes on to argue that there's a lesser effect for economic concerns than for racial concerns, even though it
does find an effect. But the point is this isn't an actual survey of why people voted for Trump. It's just another way to throw the racism flag around, in a slightly more rigorous way so they can try to discredit the economics rationale.
At this point I probably put more work into this than the article writer, by actually bothering to read the source material. Someone had to, I guess. I need a better hobby.