Ethereum is putting an old crypto promise back at the center of the game. Not the marketing promise. The political promise. The one that says a public network should not depend on the mood of an intermediary, a blacklist, or a “we’ll see later.” Vitalik Buterin just reignited this cypherpunk thread with a simple, almost brutal message: Ethereum “going hard.” Behind the phrase, there is a very concrete technical choice: FOCIL, for Fork Choice Enforced Inclusion Lists, announced as the flagship on the consensus side of…