The USD may still be the world's reserve currency but that may not last for long. Everything will depend on how the FED will act against ever-increasing inflation rates. If inflation gets out of control, then USD will lose traction at a very fast pace. That will devastate the global economy to a point of no recovery. Some countries are quickly getting out of the USD system before that happens. But others haven't expressed their intentions to get out of the dollar anytime soon. Bitcoin's price is determined in Fiat, so it's likely the fall of the USD will cause BTC to go down the drain within a short period of time. After that, the EUR or another currency will take over the global economy. No one knows what will happen in the future so we can only hope for the best. Just my thoughts