> The way the US government funds deficit spending is not by increasing money supply (though it could) but by issuing debt in the form of US Treasury bonds.

Sure it does. That Treasury debt is often bought up by the FED in huge tranches by increasing the money supply, they call it things like "unlimited QE (quantative easing)". For example, the FED announced unlimited QE on March 23rd, 2020 causing the stock market and real estate market to bounce. Trillions of new dollars were created in these last 5-6 years, and that's why everything costs more. The USG continues to overspend, and too often on dumb shit too (e.g. tax breaks for the ultra wealthy).