Nothing new; it could have been said in the 1970s.
It could have been said in the 1930s, but it isn't. I do recall Thomas Frank talks about it in What's The Matter with Kansas? but he doesn't really grasp the comprehensive phenomenon.
The difference is that it
was said about the 1970s, well before the present populism. This is just a rehash of an old old meme that has been going around since the author's heydey. He's just looking at something new and recycling a concept that he's known for a long time to analyze it.