Not the best article I've seen, but I guess it's targeted to people new to concept of Bitcoin.
The title is totally missed though. "Digital" is not opposite of "fiat", vast majority of world's fiat money exist in digital (non-physical) form. They should change 'digital currency' to 'crypto currency' or 'decentralised currency'.
This article is clearly meant to be a newbie introduction so you can't expect it to be deep and detailed.
I find it good enough to be thrown at my newbie friends, who have little knowledge of basic FIAT vs cryptocurrency topic.
