The article espouses a very US centric view where the government is a trusted arbiter of all financial transactions and there is always a trusted third party to take on counterparty risk. This is obviously not the case all over the world.
The question is how much is that actually worth and can it support crypto's current market capitalization?
Crypto also has value as being able to create digital scarcity and ownership. For example, when you play games online today and you purchase cosmetic items or you play magic the gathering and buy cards, it's pretty silly that you only own a license to use those things for as long as the game exists and there is no way to trade them.
The above concept obviously falls flat when there is no effective scarcity, ie when everyone and their mother can produce nfts that are just jpegs with no actual use. Compare this to a magic the gathering or pokemon card that is just cardboard but still manages to maintain its value.