Satan’s preferred epistemological model of human knowledge is tabula rasa, because most humans preserve this state of mental blankness throughout their existence. What little primordial wisdom exists is systematically replaced with herd conformity and herd values through a process known as socialization. Little children, the hellspawn that they are, have an innate concept of justice and understand that exploiters and predators should be ostracized or overthrown; but through careful grooming they are taught to view sophisticated exploitation and oppression as socially desirable. They are taught to succumb to the undeserved power of trickery and brawns by a herd thus suppressed, learning to follow herd expectations: they become moral beings.
Some herd decisions may be advantageous for the continuation of the species but the Devil is satisfied with recognizing them all as man-made, not universal or divinely prescribed. They are the herd leading itself. Moral requirements are nothing but peer pressure to fit in, and Satan, had He not been morally disengaged to begin with, naturally disassociates Himself from all crowd self-control.
Satan does not mind seemingly moral arguments serving the self-interest of every individual. For example, blood or organ donations, tax payment, or similar society-level resource pooling can be regarded as either personal insurance or investment sharing, and the Devil tolerates a limited level of moralization on such issues against people who do not condone or grasp the obvious advantages of self-serving actions and are swayed by appeal to morality instead; Satan considers the latter a necessary white lie.
Satan abhors moralizing individuals who place themselves on a pedestal by example of their own moral superiority, however. Our Lord of Lies is unconcerned with the truth value of their claims, knowing that moralization and hypocrisy are lockstep conducts; it is the moralization He despises because it is empty posturing and an attempt to obtain unearned authority. Satan recommends that His followers never trust a person who claims to be right because he or she holds a higher moral ground than his or her opponents. Anyone that uses self-aggrandizement as the authority for truth and justice will treat you as an inferior with fewer rights once you inevitably have disagreements.