I used to be really bothered by Felger when I would watch him on comcast sports net years ago, but then something changed. Felger openly admitted that he doesn't like basketball, doesn't enjoy watching it, and rarely does. I wouldn't take the opinion seriously of anyone who doesn't actually like or watch the sport he/she is commentating on. I find his Bruins analysis to be very interesting on the other hand.
In general, after some personal experience working in the local sports radio business, I realized that all of the stuff we see from these commentators is just shtick. These guys are much different people off the air than on the air. People I believed I wouldn't be able to stand working with turned out to be the opposite of what I had imagined. So when I do listen, I do it with a fair amount levity.