The point is:
1. Giving young guys minutes doesn't guarantee they'll develop into stars. It's entirely possible by the end of this coming season we've soured on most or all of our young guys, don't have a pick that'll turn into a franchise player AND are even less attractive to free agents.
2. Teams that dump all their vets and go young frequently have many years of total suckitude before climbing out of the basement (or being moved to another city...which might not be such a bad thing).
KOC has not done this before. KOC had his franchise players leave, handed the team over to a Hall of Fame coach and a team of mostly scrappy veterans, and had a load of cap space the following year, getting pretty lucky with Boozer and Memo.
That's not to say I don't agree with the strategy in general. However, aside from wanting a championship at some point, I value watching entertaining/competitive basketball. It's not all or nothing for me, and I suspect most fans of teams consistently at the bottom of the standings feel the same way.