This guy seems to have a rather big ego, claiming that "nobody else has talked about these things". That simply isn't true, but I'll admit that they tend to be a minority who claim that a "looming crisis" is coming in the American economy.
If the U.S. Dollar stopped being a reserve currency, I think it would be a good thing as perhaps those companies who started to outsource their production might just start "bringing it home". Still, it would be a painful several years while the economy adjusts.
I really don't trust the current U.S. President to do the right thing if any of this happens as is said in this video.
BTW, this isn't going to be "The End of America", but it will be the end of the current economic system. Of course that is why I'm working on Bitcoins too.