It isn't doubt. There are times when he is frustrating because he makes horrible decisions to pass up open looks in important situations, and these plays put games at risk.
The best example was in game 5, when he passed up an open five footer on a break to pass to Pierce on the left side 10 ft away from the hoop and ended up passing straight to a Piston. After that, we were locked down for the next few possessions as the Pistons caught up.
That pass was more harmful than Perkins Tech.
We all love KG, but he needs to be called out for those decisions because they are obvious mistakes that shouldn't happen to an all-star caliber player, not to mention a hall-of-famer, who is even a slightly competent shooter.
I'd normally agree with the "calling out" for such mistakes, but I can guarantee you that KG is being harder on himself and calling himself out far more than anyone else could. He's a guy who is acutely aware of his performances and mistakes, and works harder than most on correcting those errors and tendancies. I'm pretty sure he knows what a horrendous blunder that was, how foolish he looked, how costly it could have been, and will do his best to adjust.
In case you haven't noticed, he's made the same mistake over and over again. It was already his reputation in Minny. I also don't see how you can guarantee anything about KG. Are you his psychologist?
I am also not "calling him out". I am observing how it almost cost us and it could eventually cost us a series.
Yes, cause KG was the only problem at the end of the game. 
He scored 10 of the 24 points in the 4th and hit the clutch free throws at the end. He is not perfect but who is?
Who said he is the only problem?
The point his passing up open shots to throw the ball to the other team or to teammates in no position to shoot has hurt us at times and has cost us a game or 2, esp in Atl.
We are very fortunate to have KG on our team. No one is denying this. But one of the problems with our offense at times is his phobia of taking what are sometimes our best scoring opportunities. Your emoticons don't negate that.