I read the local news, and there is several articles that made me interesting, a few weeks ago, the mobile version of the Bitcoin wallet bitcoin platform decided to eliminate the conversion of bitcoin currencies with USD. then replaced with Satoshi.
the decision was taken to eliminate dependence on fiat currency. because bitcoin capability if converted to fiat, will interfere.
developer samourai wallet says "farewall fiat" or "goodbye fiat".
I think fiat will not bid goodbye to all of us. Although we have a new currency that sometimes makes us live conveniently, fiat currency cannot be eliminate forever for a reason that not all the people all over the world have the capability to access digital currency. Also, not all of us understands how cryptocurrency works in things and in market so saying goodbye to fiat currency is to early to conclude.