Quote--
"In some sense this self-negation is a valid and even fitting expression of American postwar culture, which fled from communal expressions of anything."
Yes, "...fled from communal expressions of anything." is a good way of saying it.
I think this is lamentable, but putting aside whether it is or not, does anyone doubt this trend accelerated and is still accelerating?
Leaders from both political parties have now famously dismissed half of the American people. First, Hillary Clinton, in effect, publicly saying half of Americans are deplorable, and next, Joe Biden, in effect, publicly saying half of the American people are garbage.
It's not difficult to conclude these comments were intended to 'divide and conquer.'
In spite of the lack of subtlety, Americans seem to be be unable to develop and retain any sense of shared identity and common interest.
I think it is impractical to harken back to the time the New Deal with the intent to interpret a "populist" standard.
Still, I thought this was an interesting and thought provoking article.