"Eventually you end up with the worst of both: a centralised system wrapping a phony pretense of blockchain. All of the energy waste, and none of the decentralisation"

The author presents themselves as familiar with blockchain applications, but I believe the statement above has two incorrect assumptions.

For one, if a developer aims to reduce energy use, they can deploy on a PoS chain.

Also, not every decentralized application has a "phony pretense of decentralisation". Sure there are some applications like that, but decentralized exchanges for instance, could not work anywhere else other than on a blockchain.