You're not going to reliably bully people away from transaction their species-backed stores of value for petroleum. Particularly not dozens of non-USDollar-backed countries eager to transact differently.
See: recent price of gold and bitcoin and oil (and stock market, in general) IE: NOT USD
See, also: several countries request physical return of their alleged gold holdings
So, they just ban crypto, and then they take your precious metals.
Think I'm kidding about the last one? The US government has already taken gold from citizens (by law, and without recourse) before, and nobody did anything about it.