I'm sure you are aware that I'm not a fan of crypto currencies, but you make a lot of good points. However, none of the fixes for America's problems require ditching the US dollar and upsetting the world's economy that has become dependent upon it. While not actually the currency of international trade, the US dollar has offered a system that is compatible with that trade, including the safest place to park excess money.
All that is missing from the potential of using the US dollar to fund the public purpose and provide the guarantees our Constitution intended is political will. The currency cannot be "scarce" when Congress is the monopoly issuer and it is a sovereign fiat, but the primary battle now driving division in US politics is what we can "afford" to spend on the public purpose and how it should be directed.
Until the people of the US get fed up with the obvious lies told to them by their politicians and media and "demand" more benefits from their government this will not change. I don't really think we can make everyone totally econ literate, but I hope to make enough understand they are being lied to that they begin asking embarrassing questions of their representatives. The fact that the people have been economically abused to this extent by their government without a full revolution for change is already mind boggling to me, but it is what it is, for now.