When the petrodollar regime was created it could be done because the Saudis jumped at the chance to have privileged access to USTs. They were good as gold- better- they had liquidity and paid interest and were backed by the dominant nation state and economy on the planet.

Today nobody in their right mind wants to hold USTs and most central banks are divesting of them while accumulating gold and other assets with intrinsic value.

The USA is facing imminent insolvency. Once the tipping point is reached it is a swift decline.

US exceptionalism hype made many blind to the process of decay that has been developing now for decades upon a sense of bloated entitlement.

US imperialism is no longer a viable business model.