> I have a bitcoin debit card. I use it to pay all of these things. Your argument is akin to a person in the US saying that a person from Europe using their visa card, isn't using real money, because you don't control it.

If the person from Europe comes to US, goes to McDonald's, buys a meal whose price is denominated in USD with his European credit card and tells me he made the purchase with Euro, I would consider that a false statement. To me, he made the purchase in USD, his credit card company just will make the FX conversion for him and accept EUR from him when he pays his credit card bill.