This is what I have been repeatedly saying. As long as the Cartel controls Bitcoin, they shouldn't start arguing about vulnerabilities in other systems or claim they are decentralized. All it needs is the government or a bad actor to gain control of a couple of pools and Bitcoin is done.
At least with PoS, the attacker has to gain control of the coins through some means. Hacking exchanges won't give them enough so they will actually have to buy out the coins. Thats another key difference, anybody holding a PoS coin has a say in the network, Bitcoin holders don't.
now think harder and see if you can find an answer that would be the the best possible solution for both problems.
wait!
what about a continual PoW
and a PoS
or just continual PoW