The dollar's loss is relative to the euro and to a lesser degree a few other currencies. Currencies wax and wane against each other. The important attribute is buying power, which has much more to do with inflation and interest rates, than trade deficits and foreign central banks. I notice he mentions neither in this screed. All he can manage is a huff and puff against WalMart!
I find it strange that people with panic over the value of the currency if nothing has fundamentally changed with the industrialized economy. Just diversify. Time and circumstance will change things.