A burning bush is that much weirder?
As long as Moses’ snake swallowed up all the other snakes, I don’t care how weird one might find the story of the burning bush to be. The snake incident sent the message that the God of Moses that spoke to him thru the burning Bush was God most high and there were none equal or exceeding him. Hence the snake of the Rod of Moses that swallowed all of Pharoah’s magicians’ snakes until there was only Moses’ rod/snake left!
After all false Gods and the knowledge of them have crumbled away from existence, only God most high with God made flesh will remain.