I'm not sure where I come out here, but saying we can't judge intent, IMHO, doesn't really support the argument. No, we don't have to judge intent on a hand ball. We don't have to know the intent to observe the action. If the hand moved toward the ball - hand ball.
Old habits die hard.
Inorder to judge misdirect you must establish intent. Go back to the memorandum when this change came into effect. FIFA's intent was to do away with the time-wasting tactic of playing the ball to a GK's hands and then restarting an attack. GK on goal line with teammates on either post. Shot on goal, at post, trapped by defender's feet.