Yahoo posted a biased retelling of a PoS study. Here's what they didn't show from the report.

Yesterday Yahoo posted a news article titled "Proof-of-stake: Ethereum 2.0 ranks worst energy consumption". The only image from the study is this one table that, on it's own, still looks pretty good for Ethereum compared to Bitcoin's PoW per transaction.

What they failed to do however, is link to the full report and show one of the most important table's: number of validators (aka, how decentralized these systems are.)

You'll quickly see that Ethereum is doing a fantastic job of balancing decentralization and kwh/tx. Even if you feel the Ethereum's "low throughput" projection looks high, remember what it's comparing to for Bitcoin. If you take Bitcoin's highest kwh/tx vs. Ethereum's highest "low-throughput" projection (worst case scenario), you'll see that Eth still has a 99.9849% reduction in energy usage. If you look at Eth's high-throughput projection, it's at a 99.9999225% reduction.

Trying to fight over 0.0001% energy costs is non-productive. The important piece to take away from this is this: all PoS beats PoW and Eth is leading the way for the most decentralized PoS.