Mathematically the US cannot repay debt owed unless they pull some serious hyperinflation shenanigans.
Realistically they will:
1. Default
Tin foil says they will:
2. Show up with millions of BTC (following ground-up global adoption), claim it is legal tender/new world currency, pump the cap into the trillions via Wall Street, pay off their debt and resume status as the global alpha dog.
As for BM's article, sometimes you have to call a spade a spade. I applaud BM for doing so and truly hope he continues to do so in the future.
In the end, folks will come to Bitshares for honesty, integrity, truth. There is only one way to build that sort of reputation and sometimes it ain't pretty.
Plus I found the indignant 'soonish/someday/probably' response from the Nubits guy very telling...