I feel like the money itself makes less and less sense these days. It's just numbers that are becoming increasingly detached from the real world
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That new money is different from the new money the central bank creates to push interest rates down. That later one the US has been destroying. But both do many of the same things (but not all).
Think about it this way: if money were just created to fund the deficit why would we have a debt? That's double-counting. You can invalidate your hypothesis very easily: the M2 money supply is about half the size of the debt. It's not possible to square that circle unless deficit spending was re-pledging existing money.