This is your scenario, not mine.
Mine is that the mechanism for collapse of the US will be relatively peaceful, with economic hardship suffered by quite a few and a fair amount of economic chaos. Governors will not be shot. I think you’ve seen too many movies. As I have said, I think the specific scenario is that states will (peacefully) secede, and particularly the fiscally sound ones.
But in any case–and I keep trying to get back to this–the point is that nations are not exempt from the fundamental principles of borrowing, nor from the consequences of overborrowing. It will catch up with you, and printing money will not save you from those consequences.
That’s why we can’t just print trillions of dollars. If the answer to the OP’s question is that it’s not a good idea to print your way out of debt, then the reason is that overborrowing is just as bad an idea for a nation as it is for a person. There’s no exemption for nations just because they are nations, and no exemption for the US just because it’s a particularly big and successful nation. Irresponsible spending is irresponsible spending. And it will catch up with us.
If you want to argue that the US has not yet overborrowed, have at it. And we’ll chat in 20 years.
If you want to argue that nations borrowing too much is somehow different from persons borrowing too much, you don’t understand economics and you haven’t read much history. In my view it’s exactly that sort of “it can’t happen to us” that is helping to ensure that it (financial collapse) will indeed happen to us.