Those are some great exercises for football, personally other than just the sheer pain and intensity of them, cleans don’t find there way into many peoples BB regiment (IMO) But they are great for exploding off the line and getting you legs conditioned for speed
They had been known as one of the better S&C programs for awhile, their strength and conditioning facility is supposedly massive and one of the best. They probably still are and always were one of the best. Just shows you great strength and conditioning vs great strength and conditioning always comes down to recruiting.