Earlier quoted context omitted.
Why would you tie an economy's capacity with the limited supply of a good? These trillions of debt (could) have created equivalent value in infrastructure, education, military power etc. The fact that the gold equivalent of what amounts to a whole economy does not exist is not an indication that the value is not there in the economy.
I didn't make any value statements on whether or not I think an asset backed currency is preferable. I just pointed out that the US defaulted on its debt when we told the world we weren't going to pay them back what we promised.
A citizen today is no more accountable for actions taken that long ago than for actions taken 4000 years ago.