I agree that fiat cannot be replaced by crypto, moreover fiat death is impossible. I also believe the government does not
let fiat die, then from the best and realistic way is fiat collaborate with crypto. That's the best financial system in my opinion,
and I'm sure this will happen in a few decades.
That means the exchange rate of the fiat and crypto pairs will indeed be a good thing and although there are differences about whether prices are stable or not and of course with many differences, fiat will not be replaced and does not mean they will destroy each other because even developments continue to occur it will make it more flexible and of course the digital era will make them more popular.