There’s a reason that Gov. Cuomo, Emmy-winning TV star and best-selling leader of the fight against the coronavirus, has abruptly gone dark. Actually, there are a few reasons. The fatal moment, politically speaking, probably wasn’t Cuomo’s decision last March — when it looked like the hospital system here could collapse like it had in Italy — to require nursing homes to take medically stable patients back in from hospitals without testing them for COVID and to give both nursing homes and hospitals a legal shield. It’s his refusal, nearly a year later, to acknowledge the literally fatal consequences of that...