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.
why are you so worried? all opinions that say that fiat money will lose to cryptocurrency is just a speculation, Fiat money will continue to be used while crypto continues to grow. Moreover, not all regions can accept crypto because technology is not evenly distributed in some regions.