Earlier quoted context omitted.
It seems like you’re insinuating that there are negative consequences to the PoS system, but leave it up to the reader to think really deep and understand what those consequences are. I’m not well versed into PoS systems, but just took a look at ethereum’s explanation and it sounded reasonable, but I’m not familiar with the details and trade-offs that are being made. Care to enlighten me what you’re referring to?
The negative consequences were mentioned in another comment: You should first get "well versed into PoS systems", The stakers (and their adjoints) can collude and decide to reorg the chain for a different outcome. This can be done indefinitely at no additional cost. In a PoW system, you not only have to expend capex for mining equipment, you hare further discouraged by the huge CONTINUED opex (energy) cost. The energ…
No, they can't. As a part of the attack they will have to produce a two different signatures for the same decision (block N has hash X). This is where slashing comes in - anyone can submit those signatures to the chain to slash signers.