It's tough to say, but if I threw out some thoughts:
I've been ranting for MLSE to push hard for the league to call penalties to the letter. Eliminate interference if you don't have the puck etc. I imagine other owners who don't have deep pockets like this grinding hockey because it leaves salaries lower when they don't have to overpay the most talented. You can stack a team up with depth, the depth, all built for "put the whistle away playoffs". Big talent takes big contracts, and more risk if they don't pan out.
It's not as bad as it used to be, that's for sure, but the tight, boring hockey is creeping back. In a highly competitive sports market it won't help their product. The only sport in the world that seems to undermine, sometimes even fail to protect their top talent.
Ultimately, it creates more parity, but, doesn't allow the sport to have it's best talent showcased, nor the beauty of the game. I think it was 2005 or so when they called everything, it had an immediate effect of getting rid of slower, older players. It seems, the sport is creeping back to less flash, more grind. Though, puck battles have always been a part of NHL playoffs, moreso than regular season. You have to want it more I suppose. The refs and league never seem interested in ensuring a tightly called, focus-on-talent game though. It's quite unusual.
Go to espn website and see where NHL is located on their sports search. It's still well behind the rest.