What was questioned in the Garden of Eden, was the Right to Rule. Read the Following:
Genesis 3:4-5 - "At this the serpent said to the woman: “YOU positively will not die. 5 For God knows that in the very day of YOUR eating from it YOUR eyes are bound to be opened and YOU are bound to be like God, KNOWING good and bad.”
Satan was Calling God a liar. He also stated that humans can be like God. Satanist now claim that they themselves are gods, which is exactly what the Bible said.