It does. There's little point it debating which currency or index of currencies to analyze, when none of them are showing significant traction as a currency.
The parent comment says nothing about the validity of "it being a currency"..this is an argument the child brings up just to Bitcoin hate. And it's a 'beat the drum' comment, same as the "it's like tulips/.com" that the parent is tired of hearing.
And, it's not the point of every cryptocoin to be a currency, whatever may be your definition of a currency.