From what I have seen so far in this forum and other crypto platforms, most of us want fiat eliminated. But let us not forget that there are still situations whereby we can't use crypto except fiat like in rural places without computers or even internet facilities.
We can't elliminate fiat no matter what we do. It is a part of our system that we cannot replace. No matter how advanced the technology is, fiat would always be fiat and it would be hard to elliminate it because it is well known better than any means of payment transactions.
Rural areas will also be covered in the future. We do not want to eliminate fiat currency right now, but in the long run crypto lovers bitcoin to hold the currency market all over the world. I know it will take long time but it is clear that the future is that of cryptocurrency and all other currencies will disappear from the market. Fiat currency will also be replaced by bitcoin.