Our current level of wealth straightforwardly depends on that fact, because we're currently trading devalueable IOUs for lots of real physical goods. The bizarre belief is the political talking point of taking those physical goods for granted (or even as a liability!) rather than bonus wealth.

Furthermore, the current state of our economy is that most everything depends on imports. Dedollarization would mean those things shoot up in price, with no readily-available domestic substitutes. And if you think we're going to set up domestic factories, where does that equipment come from? Sure we can start rubbing three flattish surfaces together, or let the price of already-existing machine tools shoot up to the point that only factories making more machine tools can afford them, but that does not happen overnight.

Maybe losing that first part is inevitable. And as I've said, it's certainly possible to untangle that second bit while avoiding collapse. It just requires the subtlety of a targeted approach - not blunt force butchering that doesn't do even the first step to analyze the situation. If the economic neoliberalism of the past thirty years is a steamroller that went over our industrial base, the Trumpist/destructionist answer is to simplistically put it in reverse.