massive government spending programs = greater deficit = greater long term problems.
We are now in the “long term” that Keynes pooh-poohed.
Not that we ever really tried what Keynes proposed which was paying down the debt in good times and expanding it in bad . . .
Somehow..., all of our "Keynesian Economists" never read anything about paying down debt in good times! Actually, the economists read it but the politicians will only quote Keynes when endorsing deficit spending (which is all the time, good times or bad!)