People complain about Richards getting time his play doesn't warrant all. the. time. Gaborik was getting the same exact treatment, and when it ended, he apparently wasn't happy with it, to the point that he had a heated exchange with the coach and maybe even requested a trade. Sorry, that's not how you answer in that situation. If you deserve top 6 minutes, you play like that and you earn them. The guy had 3 good years here, but this year he was unengaged and listless and expected to keep being fed top minutes. That's not a healthy attitude for a guy who is counted on to be a big time player.
I don't blame the coach for one second for bumping Gabby down the lineup. Again, you want to be a top 6 player, play like one. If you can't, suck it up and do the best job you can on the bottom 6.