Classic, this one.
I agree with KG for the simple reason that I've yet to seem him not *try*. KG's effort is constant. When your effort is constant, you want the effort of the public to be the same. When it's not, you get ticked off. In that regard, I definitely see where he's coming from.
I can understand that it's very, very hard on someone like him, to first injure himself and then when he returns, to get booed like that. The man puts his heart and soul into it, and gets boos in return.
I'd be pretty insulted too.
That said, the boos were not specifically directed at him, but more at the team. That's something he should take into consideration as well, before saying the above.
Also, I think he's right. You can't put the blame for the difference between the Utah crowd and the Boston crowd wholly upon the team. Definitely not. At this moment, I have a lot more respect for the Utah crowd than for the Boston one, and I really wish we'd be as loud and supportive as them.