A big part of the problem is that Corey often has the ball in his hands with less than 10 seconds on the shot clock. At that point EVERYBODY knows he's taking it to the hole, including his teammates, the opposing team and everyone in the stands.
As one of those fans in the arena, I admit that I feel more confident at that point with the ball in his hands versus anyone else other than maybe Geo. But this is where the coaches need to work on a play or two, to find a way for Corey to draw a double or triple team, as often happens, and kick it out for an open look.
They should draw up a couple of options and run those plays ad nauseum in practice. It is far too common an occurrence in our games to just leave it to chance every time, where Corey is literally improvising while flying through the air.