I think there's something to the correlation.
I also think that Kaos must've been watching the movie "Cars" again recently.
A lot of things happened at about the same time. It was a "perfect storm" so to speak.
In rapid succession you had Interstates cut swaths across America isolating (and starving to death) thousands of small communities. You had forced integration of the schools which was a noble and just cause but was poorly planned and executed. Rather than bringing the education system up to a higher standard, the result was lowering the overall standard for all. And you had the removal of prayer from the public schools.
Pre-Interstate, pre-integration, pre-Christian exclusion this was the most industrious, prosperous, successful, powerful and innovative nation in the history of the world. Since? Slow and steady decline into socialism.
Rome tried it. Where are they now?