This is just the equivalent of rich kids who live off their parents’ wealth throwing tantrum. At the end of the day, nobody dares to cut ties from the family wealth. Sure, some might be crazy enough to do it, but most of the time it doesn’t end well for them.
No country is ever going to give up the dollar just to trade with Texas. Literally nobody. This is how the US impose its sanctions and embargo against Cuba and all the Bad Countries.