They at least they belong to the same universe. But not so with the spectator. The spectator is entirely beyond us. Betray and you are a man, torture your neighbor, you are still a man. Evil is human.
Weakness is human.
Indifference is not. Wiesel's thoughts follow along with the angel speaking to the church at Laodicea. God wanted the church to be hot and on fire for the kingdom of God. Somehow, God could understand if they became cold. What God could not accept was them becoming indifferent.