When you are trying to teach a system it is VERY important that the players adhere to it letter by letter initially. There are times when it would be easier and advised to not use the system to score or defend, but that time wouldn't be in the preseason. If Burks breaks off the play to create for himself, that ruins the possession for training purposes for the 4 other players on the court. It is like a couch demanding that players make at least 3 passes before a shot is taken. It is pointless strategy wise, but very helpful developmental wise. Once the players become more comfortable in the system, they can make tweaks on the fly. That could be the reason why Burks is being chided.