Has Mr. Graham done an honest calculation of how many lives will be lost to the environmental impacts of NFTs if they become mainstream?
Why in HN of all places do people constantly have years-old takes on crypto? Ethereum is moving to proof-of-stake. Most other chains use some form of proof-of-stake. It's not like these projects are unaware of your criticisms, nor have they stood still since you stopped paying attention in 2017.
I don't think this matters unless you weigh these chains by something like popularity or market cap - who cares if a blockchain used by a few hundred people is using PoS? Bitcoin and Ethereum are the two big ones and neither use PoS (yet)[1]. Also, we have new blockchains like Chia that have found novel ways to waste resources that don't involve PoW.
[1] People have been saying that Ethereum is "moving to proof-of-stake" for years. Here's an article saying it's going to happen in Dec 2020 after a Jan 2020 deadline was missed: https://www.exodus.com/blog/ethereum-proof-of-stake-date/ Is this time different? I don't know. But saying Ethereum is moving to proof of stake is like saying "the market is going to crash". Yes, maybe, but when?