Satan represents responsibility to the responsible—perhaps one of the reasons Satanism ought indeed be feared by Christianity and its ilk? No magic words to make personal responsibility go away (Priests and Absolution), and no vicarious human sacrifice (Jesus and Redemption), just reality and accountability.
They might rightly be afraid of coming out from hiding behind the heavily embroidered frocks of their Church and taking ownership of their own actions. The warped morals of the religious right have too long been accepted as presented, in all their self-assigned sanctimony. Finally, sanity in the world is gaining momentum, and those long-standing institutions of hypocrisy and deceit are rotting away from within, and being eroded from without.