He at least has his physiology right. The position of the wrist would have little if any effect on the architecture of the elbow, and is therefore unlikely to be the cause of injury if he has any. More likely, flexion of the wrist will lead to forearm fatigue over the course of a game.

 I took a look at the linked article on scapular loading and he presents an impressive list of anecdotes. From the photos of Crow’s delivery, there is some superficial plausibility to his argument. It does seem that the raised elbow leads to extra rotation of his shoulder, causing his arm to be “late.” He therefore misses the peak power generated from his body movement, leading him to “make up” for it with strain on his shoulder. I don’t know if any of this will turn out to be correct, or if there is any prognostic value in it, but again, there seems to be some superficial plausibility. At least he is proceeding from an accurate understanding of anatomy.