I disagree strongly on the need for fiat, I also disagree with government interference in economics. The state has entangled itself in all things money, to the degree that it is commonly believed that it must be that way. It must not.

The state exists to serve the people. The state was created BY the people as a way of making life simpler, cheaper and easier. We didn't all want to take our own trash to the dump every week, we wanted a service to put out home fires, we wanted a few centralised entities that we could pay to deal with this things on our behalf. What we did NOT want was a monster entity that rules over us with an iron fist, something which sucks funds faster than anything else and which is extremely inefficient. No, the state has grown into an evil behemoth, and to a large degree it's done so on the back of fiat currency.

What Economics 101 often gets wrong is that GDP growth is not real when it forgets the effect of inflation. What Economics 101 blatantly ignores is that inflation hits the poor the hardest, while simultaneously enriching the rich. You can't take a market average for something like this, that "average" hardly represents anybody!

Fiat is VERY simple: it enriches the rich and keeps the poor poor. That's it. End of story. Only a scarce resource like Gold or Bitcoin can prevent this, because such a thing prevents the rich from literally printing themselves more wealth.