I've worked in digital cash for about 20 years; it's clear that digital bearer token money (i.e. Chaumian blinded money) could be used to represent arbitrary assets.  There is a difference between distributed and centralized systems, and right now the only really viable distributed model is blockchain based, but the distinction shouldn't be "cryptocurrency vs. non-cryptocurrency", but "blockchain-based cryptocurrency vs. blinded token cryptocurrency".  They're both distinct from account-based money.

There are ways in which blinded money is actually *more* cryptocurrency than blockchain money  by eliminating the historical record of linkability inherent in the blockchain or account-based systems, blinded tokens are inherently fungible, which supports negotiability and finality.

I'm not sure what the solution is to this article; move it en-masse to "blockchain currency" or merge with bitcoin and then redirect cryptocurrency to digital cash?