And I don't think you're disagreeing with him. I think you're trying to say "well, this other thing that doesn't get used as money anymore also doesn't fit his definition of money" and then implying that this somehow disproves his argument.
I'm not saying it disproves his argument, just that BitCoin could theoretically be useful even if it's not money. Which is sort of tangential to his point - I'm suggesting that the money angle is perhaps overrated or a red herring.
When, in fact, it lends support to his argument.