>This article should be re-titled "The Political Case for a Blanket Proof of Work Ban".

I don't see the difference between that and "The Political Case for a Blanket Cryptocurrency Ban". The outcome is the same. Etherium has not proven proof of stake can work at scale. If it does that will be great. But it's no certain thing and it'll probably mean more Eth forks like Eth classic. Most other cryptocurrencies are tied to bitcoin's ecosystem to have value at all.