The problem with buying oil in hard currency is, for poor nations, they end up not being able to afford energy as the price gets bid up by economies of scale.

We’re moving towards a world where energy gets priced in USD, CNY, Gold, and bitcoin, depending on who’s trading with who. And for the poor countries, they’ll have to use another country’s fiat as a reserve in order to access the energy market because they’ll struggle to acquire enough hard currency to satisfy their energy needs.