You're misinterpreting motion as action. The motion, after the brief right shoulder thrust, is solely a result of the right triceps. But if you spin the flywheel, you will be mixing pulling and pushing, against which Homer warned you!
So your contention is that the hitter's pivot supplies zero action?
So your contention is that the hitter's pivot supplies zero action?
Both the pure Hitter and the 4-barrel Hitter have hip action, but neither use a spinning flywheel. The 4-barrel Hitter uses a brief right shoulder momentum injection as a launching platform from which to blast off. The right triceps fires as the right shoulder thrust stops. Only the right triceps/elbow uncock the left wrist(#2) and execute transfer power(#3) by putting a side force on the handle with no longitudinal force along the shaft, which is why there must be no pulling from the left shoulder/arm.