Is LSU on the Path of Tennessee?

I recall a conversation with an ex Tn. football player last year, who is a football coach and a friend of mine. I asked him what was the real basis of how Tn. fell so hard so quickly. He said the problem was due to what LSU is seeing now-- way too many underclassmen leaving early at key positions. He thought LSU was on the same path. I really like our young guys and there is no doubt they have elite talent, but we do have to find a way to keep the majority of our talent for 4 years. There is no substitute for experience and maturity especially on the D line. Leading the NCAA in early NFL departures may be helping in the short term with recruiting, but is it hurting in the long run?