Just to play Devil's Advocate. There is the expression a manager can't win you a game, but he sure can lose you one.
I believe this applies to hitting coaches/or team hitting philosophy if they don't have hitters that fit in an approach or a system.
This is a general assertion. Kinda like a quarterback not being a good fit for a scheme.
Assuming a player wants to be respectful, known as coachable, and buys into the all for the Team approach, I can see them doing day after day, what the hitting coach is preaching. The problem is some guys just aren't wired that way and need to go back to what got them there.
If you have a guy who has made his bones off hitting the first pitch, and now the org is preaching daily, take pitches etc or use the whole field when they can only really pull the ball. I can see there being conflict. Especially for a newer player to a team or a younger player.
From what I heard from B&B tonight, Vlad is off in his own world doing some slice thing off the T and you have other MLB players going WTF?? So maybe in Vlad's case it is the opposite and he isn't listening to the coaches.