That alone can't cause an economic collapse, but sure can make one much worse.
My guess is that we'll eventually elect a populist liberal government similar to what happened after the great depression and FDR was elected. Simply because the lower and middle class will be so stressed trying to keep up with inflation that they/we will want a fix where the harder edges of capitalism are soften by government. It going to be interesting
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.