If the US were to stop running multi-trillion dollar deficits to keep them afloat, they would.

There's also been other emergency interventions like Fed swap lines with other CB's, Special Drawing Rights, and money laundering abroad (Ukraine is just the most visible example).

Tariffs, DOGE, and reinstating the Treasury while deprecating the Fed, start the death march of other fiats in earnest. That's why the shrieking globalist have all assets deployed against those things happening.

Abuela in South America keeping her grocery spend in Tethers instead of Pesos doesn't move the needle in global finance quite yet, but it's a signal of what's to come at greater scale.

Here is the DXY since 2008 (GFC), at a certian point this has to break out (and break everything when it does)