I agree with all of this, think it's supported by what you see in my clips, and think you can stick a fork in the early bat speed and early torque debate as a result.
The swing happens so fast, how is it possible to add something (to help the whip) after the swing has launched?
The question then becomes how much hand, wrist, or forearm force is involved in the whip.
I think when you look at frames, especially at 60fps you get the wrong conclusion some times. These swings up close are so fast its hard to describe. Once these MLB guys go, the swing is over, done, complete IMHO. You better work the hands early rather than late............
"Tip it and rip it" - In Memory of Dmac
"Hit the inside seam" - In Memory of Swingbuster