I think that's a simplistic view, similar to thinking a guy with few assists never passes.
Lance is good at finding the guy in scoring position. When there is no one in between or when it isn't easier to just try the shot himself. He just won't give up the ball unless there is immediate reward.
That's what makes him so frustrating. If he would pass to the guy in position to change the direction of the play, rather than only choosing between "dribble", "shoot", "assist", he'd be the greatest team player ever, over and above any individual skills.