Ok this article seems to be willfully ignoring two advantages of PoS:

- Liquidity and capital-over-time that you have to “burn” (which makes PoS just another type of PoW) is actually capital that was fabricated from thin-air. So while PoS is not less wasteful, the act of switching-to-PoS is a gigantic act of wealth-creation.

- A much bigger point, relevant to the future of humanity on Earth: there are externalities to PoW which makes mining cost more to society than its $ cost to the miners. Instead of lobbying to include those externalities in the mining cost via various pollution taxes, we can sidestep it entirely by doing PoW with something that doesn't do physical damage to the earth: PoS.