You’re being intentionally obtuse. We’ve all seen plays where one ref comes in for the spot and another overrules, in the common meaning of that word. That is exactly what happened here. It had nothing to do with who gets the ball.
Also, “what does seeing Allen’s face vs back have any bearing on it”? The ball was on the same side of Allen’s body as his face, not on the same side as Allen’s back. If the whole point is to see the ball in relation to the line to gain, one viewpoint obviously gives a better chance to do that.