The american dream seems to have changed more towards taking from others to give to ones self. I notice a difference in "safety nets" now compared to say end of ww1. Very different times, and it affects many things.
Don't conflate political rhetoric with quality of life. Quality of life has never been higher for any social class, even with unfortunate income inequality.
even if this were true (source?) it doesnt matter when there is a steady move toward lower social class on average for the overwhelming majority of Americans