You're talking about Modern Monetary Theory (MMT).
It's the current fad for the deep thinking neo-Keynesian economists that currently tell us their policies have nothing to do with massive inflation.
Basically, the thinking is since it is simply fiat money (or petrodollars since that was the main backing) backed by very little other than the full faith & credit of the US govt, there is no cost to continuous printing of money.
That's what we have seen since at least 2008 with the Quantitative Easing (QE) money printing & expansion of debt.
Even DT fell for this "voodoo economics" to steal a phrase from the elder Bush.
Milton Freedman gives a good analogy
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And here he speaks basic economic facts that modern economists want to ignore
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