Good points. And I hate to play a card like this, but anyone who doesn't understand a wider impact being at play here hasn't played team sports. While much tougher to quantify, the atmosphere that a player with attitude problems who isn't willing to put in the work creates across the team is toxic, no matter how talented he is. What kind of message does it send to, say, a player like Chytil who is trying to become a more complete player if a teammate like Buchnevich waltzes into the top 6 every night while loafing it in practice, etc?
I've never found "attitude problems" and "questionable work ethic" to be in any real way directly related. Sometimes they are, certainly. But there are also toxic hard workers and well loved schleps and everything in between. I also question how much the latter really affects anything in the locker room since how a fan or a coach views a player is not always consistent with how his fellow teammates view him.
For example we as fans, and Colin Campbell and Mike Keenan as coaches, might have wanted to strangle Kovalev for his floating and disappearing. But the guys he played with, especially Messier and Graves, loved him and loved playing with him. Scratching him in favor of a significantly less effective but harder working player would probably not have had a positive effect in the locker room or on the ice.
So I am not really sure how Buch playing or being scratched will affect the team off the ice. There seems to be a lot of credence given to the guesswork that Buchnevich playing will somehow hurt the younger players, without any real indication that's the truth. Honestly I think the other side of that coin, that maybe benching Buch could have an adverse on both rookies and veterans because (despite rebuilding) they still care about scoring goals and winning games due to it directly affecting their paycheck, is just as likely.
Personally I think neither of the above situations are likely because the effect these kinds of things have on the locker room how other players behave is absurdly overstated. But who knows.
In the end I just want them to make decisions that work towards improving the team on the ice, and for that to be the overriding priority, always. If that means waiving Buch tomorrow, do it. But if that means playing Buch, even if its only so they can increase his value in a trade (he certainly wouldn't be the first underwhelming player showcased) then do that. Just make sure the teams priorities, and managing assets should always be higher than managing sensibilities, are where they need to be.
(apologies in advance, I started this reply about 6 hours ago at work and have not checked how this conversation has progressed, so if you have already had this discussion, sorry)