I think you're missing the forest for the trees. Fiat currencies ALWAYS fail. They are 1 part social engineering, 1 part highway robbery. Engineered failure.

In the past, fiat failures meant poverty and war. Then, when the people were down on their knees, the bankers gift: more fiat.

Cryptos today are Damocles Sword, hanging over the banker's heads. Each fiat debacle, each bail in or bail out, now puts the Central Banks in peril, NOT the people. Because there is an alternative --an emerging one -- in place.