How does anyone know what the S&C program is doing? Sark has coached in college for decades. He has won multiple national championships. Did he not know what kind of S&C they had at USC or Alabama? It seems very simple: increase strength, explosiveness, and endurance. Scipio/Paul mentions that the S&C coach is focused on bar speed with 135 lbs on bench. I'm sure he heard a coach reference that. But you can measure that after a basic strength program. You can have a base and then other fine tuning. I'm not saying they are strong, but last year strength wasn't a huge problem on the OL except for Hayden Conner. Majors wasn't super big, his strength was mobility.
When you look at the pass plays many of them are due to a poor blocking system, lack of execution, and lack of aggression. The problem at LG was definitely lack of strength, but that could be due to Stroh not being good enough of Texas and Brooks is a Freshmen who hasn't learned enough pass technique.
I think there is more room for improvement during the year than those guys are saying. But the coaches have to actually coach and motivate the players.