Here are samples of 3s from recent games still on my DVR. There are really only 2 of his last nine where the shooter closed out timely when he shot. One other he was wide open after he pump faked (Barnes, a good defender was cheating in on the play) and he did get a KO screen on one. The two closest guarded shots were one against Hou (miss) and Tor on the left base line (hit the side of the backboard).
The rest were wide open or very late closeouts from overplaying the middle or the defender got there after his release was long gone.
Simply put, teams are planning defensive breakdowns to have his man recover late.