They generally never address the important 'how' part in any speeches or legislation. You can't accomplish anything if you don't deal with the how's. A lot of folks try to say that countries who have fiat currency never survive, but the fact is, neither do countries who have currencies based on a single commodity, it is just too risky to put all your eggs in one basket. It is why I like Milton Freedman's monetarism approach that is somewhat down the middle, currency based on the total production, but highly regulates the Fed's actions to only increase currency at a set rate below natural inflation- but reserving some power in the event of a real outside emergency (a national security fail-safe)
This way the currency is based on production, not debt, and the currency value isn't used as a way to socially engineer the economy. It is a harder currency. I've always been under the opinion a single commodity backed currency would only work in a closed system.