There is a very sudden shift though - those options have existed but not generally been seriously considered. The US was seen as a bastion of stability and while sanctions could drastically impact a country's ability to trade due to the reliance on US currency exchange it has arguably been used relatively scarcely.
The change is that suddenly the US isn't a bastion of stability and having an independent trading currency could ensure more internal stability for other nations.
The change is that suddenly the US isn't a bastion of stability and having an independent trading currency could ensure more internal stability for other nations.