It really stresses me out how folks have equated PoW algorithms in a chain with a general Byzantine Fault solution. They haven't, and Bitcoin essentially lives

It really stresses me out how folks have equated PoW algorithms in a chain with a general Byzantine Fault solution. They haven't, and Bitcoin essentially lives and dies by the proposition that it is more valuable to the majority of miners alive than dead. The instant this is not true, there is a potential for a majority of miners to defraud the system and extract value until the value of the currency drops to 0. And of course, the damage to the system just 2-3 colluding miners could do if they wanted is pretty significant, especially if the goal was DoS instead of theft.