Comment by rat87

I'm far from understanding economics but my understanding is that Modern monetary theory is a somewhat fringe theory that gained some advocates especially before post pandemic inflation while Keynesian economics is although maybe a bit modified from the original largely accepted as part of the base of mainstream economics. They are very different. Also vast majority of countries have central banks and spend more then then save, it's hardly specific to the US (although the US gets cheaper rates because of its position)or a major concern (at least if the debt to GDP percentage doesn't grow too high, or if you're Japan).