I don't disagree, but that's just the reality with coaching in the NHL. They all, down to every single last one of the guys behind the bench, favor vets. Babcock, Trotz, Laviolette, all of the best coaches (and the worst) favor vets to a nauseating degree. Couple that with the fact that this organization reveres it's guys who have been around forever and you're going to have Kunitz ruining Sid or Geno's lines whenever someone gets injured or falters even the slightest in performance. That's just the way it goes.
As much as Sullivan is rightfully getting roasted for his line combos/pairings, it's just as much JR's fault for allowing such glaring weaknesses to remain on the roster. Lots of us said it last summer, complacency and satisfaction are the death of success in the NHL. Didn't matter that we just won a Cup, we had issues then and they weren't changed, so we're suffering through them right now.
If Kunitz and Fleury are on this team come October, we're literally right back to Shero/Bylsma-era stupidity and arrogance.
-edit- And just to clarify, I don't revile Kunitz as a 4th liner getting 8-10 minutes a night. He actually played relatively well (with regard to his past 3 years of hockey) there and the only real issue was his cap hit in relation to his role. That being said, we all know that's not the whole story. The issue with Kunitz is simply that even if Sully makes the right choice and plays him in that extremely limited role or scratches him for a more effective player, that won't last. As soon as something happens like an injury or a stretch of poor games, Kunitz will be square-pegged right back up into the top-6 and on the first PP unit. Such is life on this team. The only option to completely solve the issue is to remove him from the team.