first of all it’s the central bank that controls money supply, which is independent from the government.

Michael Hudson on the Federal Reserve System

Congress constitutionally has the power of the purse, and the it’s the US Treasury that creates money[^1]. When Congress created JP Morgan’s Federal Reserve, it partially cede its monetary sovereignty to the cartel of private US banks, and it can destroy the Federal Reserve in the same way that it created it, with the stroke of the pen.

even if the government could magically create all the money it needs to pay its debt, without borrowing more, it would completely devalue the dollar.

I see that you didn’t engage with the materials that I provided. Someone always says this, which is why I provided information on precisely this in my link about hyperinflation.

[^1]: There’s a second way that money is created: Congress deputized the private banks to create money out of thin air in the form of debt, meaning loans & mortgages. Each of those dollars is destroyed when the debtor pays down the principal.