Kessel was on the 2010-11 team too, perhaps we should dump him? Same logic. Guys kill me.
It's not the same logic at all
Grabo and Mac's roles and contributions to the team declined coincidentally in the year that the team was winning and earning a playoff spot. Neither are no longer on the team yet the team is finding ways to win and getting offense.
Grabo and Mac aren't even in the same category as Kessel when it comes to contribution. Kessel finds ways to produce. He is the picture of reliability in terms of doing what he's expected to do. It didn't matter who he was put with, the guy could score goals and make plays. Unlike Grabo and Mac, when the team was finding success, Kessel's role didn't diminish, it actually matured. He's never going to be a big two way force on the ice but he showed a lot of growth as an all around player last year and was huge for the team all throughout the Boston series.
The difference is that as the team was winning, Kessel found ways to be better (all the while putting up the numbers we expect from him) while Grabo and Mac struggled across the board.