The net result is that gains from the rise of new constituencies have been more than counterbalanced by hemorrhaging votes from the traditional working class. In retrospect, this is the Great Lesson for the left in the early 21st century. It is simply not possible to build sustainable progressive majorities while continuing to bleed working class votes. The numbers just aren’t there. Just look at the campaigns of Bernie Sanders and Elizabeth Warren in the 2020 presidential primary as just two recent examples of this flawed political strategy.
The further implication is that the rise of these new, culturally liberal constituencies is not free money. There is a cost for allowing these constituencies to hegemonize the left and define its values. Until and unless the left tacks back to the center on cultural issues and promulgates a unifying, patriotic, economically uplifting message that working class voters find serious and not condescending, it seems likely the working class will continue to keep its distance from the left. . .
Do you suppose they are correct?