It should be of interest, because there are politicians and government policy makers who act upon the nonsense propagated by Krugman and his ilk.
Krugman is part of the problem, CAN NOT be part of any possible solution
Learn to Stop Worrying and Love Debt
by Paul Krugman
NY Times Dec 2020
https://www.nytimes.com/2020/12/03/opinion/biden-republicans-debt.html