Another reason it probably shouldn't be understood as a metaphor is 279-12. There was only Moses and God and nobody to "debate" and no reason why Moses would run away in fear of "his argument".
"O Moses, it is I God, the Noble, the Wise, and throw down your staff." So when he saw it vibrate as if it were a Jinn, he ran away and did not turn back. "O Moses, do not fear, for My messengers shall have no fear from Me, except one who transgresses, but then he replaces the evil deed with good, then I am Forgiving, Merciful, and place your hand into your pocket; it will come out white with no blemish, one of nine signs to Pharaoh and his people." (279-12)