Yes true, if we pay attention, what fiat does can be replaced with crypto even better because it is faster, safer and the transaction fees are cheap. I hope many countries will think about this so they accept crypto.
with a fluctuating nature, it will be very difficult for crypto if it is used as a substitute for fiat. even if many countries adopt crypto and legalize it, fiat will still be the main means of payment and crypto will remain an alternative both now and in the future.
this is certainly not without reason referring to the volatile system that exists in crypto, it will be very difficult for us to regulate the price because by the nature of crypto it is difficult to guess other than that a transition like this at least needs to be thought about carefully because the majority of people today are still many. who likes fiat and it will be very difficult to change this habit