Very good article. From the article:- “ At the heart of all of these systems would be the fact that the dollar would no longer be the world’s only currency for energy pricing. The euro, yuan, and perhaps a few others, or a neutral reserve currency, could be used in trade agreements to buy oil, gas, and various commodities, which unlocks the prospect for more global trade and reserve holdings in those currencies.”

While this makes total sense the fundamental problem with this is a consensus mechanism to control liquidity in a localized crisis. If you have one currency it’s easier for that country to make a decision rather than convince all the other countries.