I truly prefer Frost's honest approach with the kids(not saying that made them leave), but giving them a no sh!t sitrep of where they fit in or don't. The guy who doesn't work in this system might go on and excel in another. The team is better when it has all the guys pulling the same way, buying in, fit the system and have an opportunity to contribute in some way. A guy who sees where he fits, what's expected and how he can contribute tends to practice/play better IMGO.
Regardless of the reasons, I wish nothing, but the best for the kids moving forward.