[12 piece bucket]

From a pure physics point of view the closer the shaft and clubhead to your body, the lower the MOI with respect to say the spine axis so the easier it is to keep accelerating with the pivot (same a a skater spinning with arms close to the body vs extended). Of course at some point that rotational speed need to be transferred to clubhead speed so timing becomes more and more critical as you keep clubhead lag later and later in the swing.

fair enough....but the clubhead has to get OUT to the ball...what is being demonstrated here is the HANDS AND CLUB going OUT to the ball NOT the clubhead...the clubshaft isn't CLOSE to the spine axis the HANDLE IS MOVING AWAY from him...so the clubshaft would be rising quickly through the ball with the left wrist only able to uncock and arch....

Bottom line what you say may be correct...but I submit...this AIN'T the way to do it...