I have a different take. What I heard Rozier say at the end of the season was we would go into games with Brad's game plan but then, game is on, and we would do it Kyrie's way. What if Rozier, admittedly not the most instinctive point guard, got us to the Eastern finals last year by following what Brad wanted. And this year Kyrie had a dismal series against the Bucks and was, in my view unbelievably selfish (a la Ricky Davis), and his selfish individual play rubbed off on the J's.
I always felt that last year Terry played as the back-up starting point over Marcus because he did what the coach asked instead of going heroic all the time, last year Marcus's shot selection was atrocious. This year he shot better because he took better shots.
Could it be as simple as Kyrie thinks he knows more/better than Brad and does it his way, does not follow the game plan, Marcus tries too hard to be the hero and Terry when given responsibility tries to please Brad, follow the game plan? But often after Kyrie not following the plan the team was not on the same page.
For those who say he is a terrible defender you cannot deny his reckless pursuit of rebounds and a better than average number of deflections. Where does he stand statistically on steals? He has had some important steals.