Many modern Christians want to have their cake and eat it too, believing they can somehow reconcile pseudo-science with the miraculous events they find in their Bibles. They do this by mythologizing the early chapters of Genesis and anything else they find inconvenient to the secularized mind, often including Job, David and Goliath, Jonah and the big fish, and so on.
The point at which accommodationists believe Genesis moves from myth to history may vary from one to the next, but the intellectual contortions required for mythologizing scripture are the same wherever one draws the line.