We've underdeveloped 5 stars for 20 years. Blaming the player is absolutely ridiculous.
Agree with your first sentence. Disagree with the last sentence.
Sometimes it can be a combination of both the coach and the player. I'm plenty critical of coaches, but in LT's situation, I feel it is more on him. Maybe he was just never that good to begin with.
Here is an example of why I think this is more on LT. Look at Corey Flagg. Yes, I know Flagg and LT play totally different positions, but hear me out. Flagg, one of our slowest, most unathletic, least physically talented linebackers to ever start here. By all accounts, hard worker, good football iq, very coachable, great teammate. I've never heard any of that said about LT. Flagg ended up having his best season. Not a dominant season, by all means, but a pretty good season. He was also put in a position to succeed and play to his strengths, thanks to Guidry and Nicholson. Same with LT, he was put in a position to succeed and he underperformed.
So, how can the coaches be responsible for Flagg's improvement, but be the reason LT underperformed? Flagg had just as much responsibility for his improvement as the coaches.
My point is, Flagg got the most out of his ability because of his work ethic, dedication, and good coaching. Flagg had a solid season for us, despite his limitations. LT had a disappointing season, although he was labelled as "talented" and "skilled." To me, that says more about LT than it does the coaching.