He had every right to request a trade when he did considering Pop originally promised him that he would still get his 20 points per a game with the Spurs. I remember reading about this when LMA signed with the Spurs that he was concerned his offense would go down but Pop promised him he would still be able to get 20 or more. Pop broke that promise. Can't get angry at LMA for wanting out. That's all on Pop for not being honest
Secondly Kawhi has a much bigger ego than Lamarcus. His ego is on the same level as Lebron,Durant,Harden. Just look at the antics he put the clippers through last year such as showing up regularly late to the team flight and delaying take off by 30 minutes to an hour. Kawhi plays games with every team he is on. Say what you will about Lamarcus he doesn't play games.
Thirdly you just hate Lamarcus. He was your target from day one. You were going to hate him regardless of what he did. He could have averaged Wilt Chamberlain numbers and you would have still hated him. Anything short of him getting the Spurs a championship would have gotten your ire. You are just a hater.