2021 was a fake year for growth, that's the point, because we were relying on cheap and plentiful money being subsidized by borrowed time. We'll be paying the press for a long time for the spending and helicopter money that provided demand, while supply was still limited. For Krugman, a monetarist, printing money when there are fewer goods and services in an economy, wasn't registered as a problem. Ah, but he admitted recently that he was wrong in the party line of "transient inflation" (where every private economist outside of academia and the government knew it was not going to be transient and made moves at the end of the 2021).