This is an extremely poorly researched article. If somebody were to spend a dozen billion dollars to gain 51% control of Eth PoS, the users could coordinate to

This is an extremely poorly researched article. If somebody were to spend a dozen billion dollars to gain 51% control of Eth PoS, the users could coordinate to ignore their chain, or even burn their stake and destroy their purchased funds. You can read about the economics of it here: https://vitalik.ca/general/2020/11/06/pos2020.html https://vitalik.ca/general/2020/11/06/pos2020.html