Good and Evil are what results from Empathy and Apathy. When one is indifferent they let go the reigns of hope. When one has Empathy they open themselves up to others and share in their pain. Empathy offers hope and engenders respect. It is uplifting, and in its purest form it is love, the giving and sharing that cannot be destroyed by the indifference of apathy.
If a cult-member is apathetic, then they’re content and will seek NO further. They will not advance in their education, and so they’ll never bother to deeply study their gurus questionable theology.