You cannot have a country without a healthy populace.
The policies being promoted by so-called unelectable progressives like Bernie Sanders are hardly radical and in fact greatly mirror what FDR would have proposed back in the 1930's. Today, the New Deal or the GI bill would be mocked by the GOP as being expensive socialist insanity but without them America would never have built up its once healthy middle class. A little chunk of a huge military budget would do nicely.
Biden is the milquetoast selection which will solve nothing as he also represents the political class which is beholden to Wall Street and promoted a Neo-liberal philosophy which helped get us emperor Trump as well as Brexit.
But, by all means, keep playing the centrist card and see how far that gets the country.