The author's point seems right on to me. The trend seems obvious if you've been alive long enough. It accurate, and I believe it is, we can expect social upheaval at some point. We can stop the trend, but like climate change there isn't going to be the political will or awareness needed.
America is Regressing into a Developing Nation for Most People – Evonomics
The U.S. is no longer one country, but dividing into two separate economic and political worlds