It's definitely looking very good when it comes to what kinds of currencies are going to be used during the Information Era, but I do not believe that "SDRs" are going to be going anywhere anytime soon, to be honest. It's mostly wishful thinking right now and I don't have a ton of confidence that Bitcoin is going to shoot up and take a major position in the global economy anytime soon. Especially considering the market recently.
Yeah current predictions are too far fetched.
Bitcoin is revolution but will it be used on more wide scale payment system?
Maybe it will be best in the world store of value, store of value of new era when keeping/buying gold will be old-fashioned retro lovers thing.