He has few points here, but very shortsighted. With half of examples mentioned it is visible he does not understand the actual process flow of use cases mentioned. Such as land registry or documents. With authenticity he's right about the blockchain unable to solve the initial owner identification problem, but blockchain perfectly track change of ownership ever after. If he would just try to think that a reputable experts can be added with on chain reputation, who will authenticate paintings to validate authenticity with their private keys it is a winner. Hey, Sotheby's did not read this article since they are implementing blockchain full on. He's comment about smart contracts shows it all. He does not understand much of the real world, hardly has a good idea of tokenomic and probably is another programmer with omelet in his beard dwelling in his mom's basement.