Sure, they might exist, but so what?

Justin’s view of God … requires a rejection of the theological legitimacy of the polytheism in which he was born and reared and which formed the fabric of Greco-Roman life. He does not deny the existence of the beings with which such polytheisrn was intertwined, but he most emphatically denies that they are God and, hence, denies the legitimacy of their worship.—One True Life: The Stoics and Early Christians as Rival Traditions, 146