No, the reason the story is about the “white” working class is that Kevin Williamson wrote a very pointed article in NR a couple of weeks ago about the white underclass, which is just as dysfunctional, though somewhat less violent, than the black underclass. A number of people took offense. Many of the offended, of course, had not read or carefully considered the piece; they were just offended that Williamson had dared to hold dysfunctional people responsible for their own pathologies. There have been several follow-on pieces in NR addressing the controversy.
I'm not a schill for NR, but you are exactly right - we see a lot of knee-jerk reactions to the mention of NR, where they don't dispute specifics, but merely rail on about "the GOPe".
Sadly, many seem to have taken up DU habits of blanket trashings divorced from actual discourse on the merits.
Being told that if you vote for Trump then you are white trash and need to die is pretty offensive.
Williamson is an apologist for the global freebie we have made of our industries and technologies