[Guvante]

But Bitcoin isn't a currency for vendors, that is how the problem was solved. It is an investment strategy for consumers and a transaction method for vendors, but not truly a currency.

He was talking about whether Bitcoin will ever become a currency not backed by USD (or whatever) and postulating why that will never be the case.

Bitcoin is currently surviving off its liquidity, not its value as a currency.

[sounds]

Liquidity is one of the values of a currency. You might want to study up some more on what currency is, and what it is not.