The topic title is seriously misleading "Fiat is a Digital currency without Value".

First of all, digital currency was iniatiated not by any government-controlled central banks so it was not fiat at the begining of digital currency history.
Second, we should talk about stable coins before moving to digital government-controlled currencies (like what Chinese government want to do recently). Stable coins have their weaknesses because of unclear evidence on how they are backed by solid assets. Governments can freeze stable coins even they are in your own wallets.

On the other hand, they take advantage of stable coin to try launching their centrally controlled digital currencies. Such currencies launched, and controlled by central governments and banks are not truly what the crypto world is looking for. They serve for the benefits of governments only.