Why does Hollywood hate Costner?????

Every film that comes out of his the critics just rip it to shreds and they not only criticize the film they single out Costner. But everytime I have been to see one of his films I have always been entertained and found that the reviews do not correlate with what I'm seeing on the screen (e.g. Mr Brooks).

This film for example, they said everyone just mailed it in for the check, except Costner. he just p lain is a bad terrible actor. He was playing a guy with a messed up brain to start with and then two sets of memories inside his head at the same time. I thought he played that as well as can be.
The only one who mailed it in, imo, was Gary Oldman. His character was as one dimensional as one can portray. The rest of the cast did a good job

They also said it wsa pure dumb action. There were relatively few action scenes and definitely not the film's defining mission. There was plenty of dialogue and a few touching scenes with Jericho and the little girl and wonder woman.

the bad guys were one dimensional and very under developed, but they seemed more as a frame to move the main plot along.

I just don't get the constant criticism of KC from Hollywood, there has to be a reason behind it...anyone?