This talk of de-dollarizing the world economy as been around for quite a while. I recall some saying that was part of the reason Saddam Hussein was killed, because he wanted to promote use of other currencies. I won’t pretend to understand it all, I just recall the talk at that time.
It’s one thing to dethrone the king, it’s another to get everyone to agree on his replacement.
I don’t remember hearing that about Hussein. Putin tried to build a coalition to do it ten years ago. But, the only one that seemed somewhat realistic is the Petroyuan.
Personal opinion, what will replace the dollar as the international reserve currency in the next few decades will be bitcoin. The effect on our economy will be just as devastating but at least no other nation’s currency will benefit.