The job of a coach is to try and secure a strategy for victory, and to guide his or her athlete into becomeing a batter athlete. It isn't the job of a coach to make his team, or his athlete exciting, it's about results.
Another reason why Dana is taking shots at Jackson is the fact he has so many great fighters in the same division.
He doesn't wanna have another Koscheck-Fitch situation on his hands: two team-mates that won't fight eachother.
That's why he was applauding Carlos Condit so enthusiasticly at the press conference after he beat Hardy.
Condit said he would be interested in a potential fight with GSP, but seeing how both are part of Jackson camp...it would be an akward situation and they would have to see how it would go down.
Plus, there is Diego Sanchez in the WW division, another member of Jackson camp.
He has Stevenson, Guida and next it will be Cerrone also in the LW division. (although Guida faced Florian a Tristar member)
Jon Jones and Rashad - top contenders in the LHW division.
I think Dana is more pissed about this, than Jackson's fighters putting on not so exciting fights from time to time.
Jackson camp keeps growing and attracting a lot of great fighters.
He is affraid about losing a lot of potential fights, because of fighters being team-mates. And fans want to see these fights. He is the big boss and if he can't put togheter those, he's losing "points".