It was during the first term of Trump when he said something like "So long as people are buying oil in US Dollars, it doesn't matter how high the debt is."

It is reckless but he is kind of right. So long as it is the hemoglobin for a sizable bulk of global trade, it can potentially go a lot higher. But that is a path that ends in tears, any time between next Tuesday and 50 years from now.