FWIW, seems like the guy missed the most glaring issue that's been nagging him. He's trying to suggest that he's flying open which both Beckham and Walker have scoffed at. Everyone seems to think batters are flying open when they struggle.
I suggest you take a look at his right elbow in both videos. You'll see it more clearly on the straight on angle vs. the CF angle. It's higher this season than last, which is why the angle of the bat is different. And it's probably why he's lost the power of swinging from the inside. Like the golf swing, it's usually fundamentals like the stance that start athletes into bad habits. Just my opinion.