Let's look at some other second options on good NBA teams, and a couple first options as well.
Field goal attempts per game:
Amare Stoudemire 15.1
Tim Duncan 14.5
LaMarcus Aldridge 14.5
Deron Williams 13.8
Jason Terry 13.7
Jamal Crawford 13.3
Chauncey Billups 12.8
Mo Williams 12.8
Pau Gasol 12.7
Gerald Wallace 12.5
Jason Richardson 12.5
Ray Allen 12.5
Josh Smith 12.0
Kevin Garnett 10.9
Dwight Howard 10.3
Pau is right in line with most second options on good teams. Heck, he even gets more shot attempts than a couple guys who could be considered first options.
Now look at Pau's career numbers in a couple categories:
Pau's career field goal attempts per game: 13.5
This season: 12.7
Pau's career assists per game: 3.2
This season: 3.4
Pau's career free throw attempts per game: 6.3
This season: 4.9
So basically, Pau gets very similar field goal attempts and assists and free throw attempts compared to what he's always gotten throughout his career, even including when he was a number 1 option. As a Laker, he's probably given up around 3-5 touches a game (my personal guess) compared to when he was a no. 1 option. In fact, when Kobe ball hogs, he's usually taking away shots from players other than Pau. Pau still gets his touches. In the triangle, there are opportunities for everyone in the offense. Everyone will get a touch. If they aren't aggressive in looking for their opportunities, when it's swung back to Kobe, don't expect him to not be aggressive with the ball. Sure, there are times when Kobe takes quick shots and becomes a blackhole especially if he gets hot. But, it's not as much as some people try to say it is.
In other words, Pau should shut the up.