I'm going to disagree with the definition of "workout warrior" used here in relation to Cush. For me at least, a "workout warrior" is a player that looks like Tarzan and plays like Jane, a player who has big numbers on tests like they run in the combine but who can't translate those numbers into performance on the field. I've never heard of or considered Cush a workout warrior by that definition.
He's a gymrat.
Totally different thing.
What I've liked about what I've seen of Cush's training is that it involves a lot of the powerlifting techniques and approaches I'm used to and comfortable with supplemented with a lot of the power training plyometrics that great OL coaches like Dr. Mel Siff were so enamored with for improving athletic performance and explosiveness. He's got a more informed approach than you see most people use.
That was what killed David Boston. He had all the talent and potential in the world. He became a gymrat but instead of using a lifting approach that improved performance, he used one that increased size, one that didn't really translate to the field. So he got big and ripped and awesome looking but... he slowed down and lost his speed and agility.
When you're that kind of gymrat, it's hard NOT to lift. It's hard NOT to push the rehab to the point where it loses effectiveness. I trust Cush and his coaches to make the right choices in how to both satisfy his workout addiction AND limit the stressors that they place on that injury so that it's within healthy bounds. Box Jumps could be an example of a way to work out and maintain explosiveness without putting too much of the wrong stress on the knee.
At least, that's the way I'm choosing to look at it.