That sort of thinking might have been among the very things the daimons exploited. After all, everyone's a fool, and the biggest fools are those who think they are not the fools.
In all, the invaders really took advantage of human weaknesses, such as causing petty differences to fracture any potential cooperation, using a lot of deception to cause confusion and cast humans into doubt as to who is the "good guy" when in truth they were all pretty much "enemies" to humanity.
