Just as the video says, we need a free market.

If the value of gold fluxuates to much causing price confusion, there's nothing stopping the creation of a "cost of living" index that defines the average unit of value required to live one day. But the index would not be backed by anything, but rather it's just a measure. Things would be priced in this index, but payed for with crypto, gold, silver, stocks, or whatever else they have. The block chain technology can be used to facilitate the instantaneous conversion from one form of payment to another. (Think Ripple or something similar.)