The organization hasn't done anything to Grant, except for pay him and trade him to a place where he's happier. He just didn't fit in and I don't think it's a BS narrative. I think it's true. Nobody said he's a bad guy or a bad teammate, as far as I'm aware. The anonymous quote was just that he rubbed people the wrong way and that's from a beat reporter who may have got the quote from a trainer, for all we know.
This was a Celtics commentator who said he was a bad locker-room guy.
I blame Grant and Luka. Grant can definitely rub people the wrong way and Luka has a way of burning through assets. Not sure how much blame to assign him for each questionable departure, but Porzingis, Haralabob, Brunson, Carlisle, and now Grant...he's stacking bodies.