The problem is that people assume that bc he's a head coach, "grind em" must actually have sound systematic principles.
It doesn't, as evidenced by both the on ice lack of cohesion and the behind the scenes glimpses of player/coach communication and "instruction".
There is no "grinding" system, all approaches to the game that involve strategy incorporate some form of wearing the opposition down either physically or emotionally.
A real coach balances btw installing & perfecting a certain philosophical approach to controlling the play with adjusting to the strengths/weaknesses of the roster at his disposal. There is a necessary fluidity & adjustment factor while sticking to high level philosophical tenets about the most effective way to succeed that great coaches navigate better than the rest.
Therrien's approach lacks any of this. He's about as superficial a sport mind as you can find. A guy with a good work ethic, charisma, and who lucked into being at the right place in the right time. That he lacks any real skill in the art of coaching is beyond apparent.
"But he's coached 750 NHL games"...
As a wise person I know once said, some people have 25 years of experience, others have 25 X 1 year of experience. Therrien exemplified the latter.
Personally, I'd love to see the Habs play a physically imposing style of game. But that starts with discipline & character (both elements this management team has shown no understanding of how to cultivate) & then requires systematic roster adjustments to assemble individuals capable of playing that style.
You don't extend guys like Desharnais, sign UFA's like briere/flash/semin/Gilbert/sekac or trade for guys like Ryder/gonchar/pap/vanek if that's the style of game you want to build around. (Anyone one of those isn't an issue, it's the collective accumulation of moves that all reflect a lack of cohesive decision-making)
We have a small, speedy roster, with a D that has above average mobility & puck skills and an all world goalie... The roster is built for a run & gun/puck possession based approach, yet the coach has no clue how to build the necessary attention to detail & responsibility necessary to succeed that way.
OP is wrong to assume the issue is with "grinding" or with approach in general... The issue is that our leadership lacks the competence or conviction to actually build any consistent system or style. The Habs don't have any real system, nor any consistency of personnel...