unless the right hook is done without the elbow ever leaving the trail side as is shown with Hogan in the clip I posted.
You might also have shown a clip of shotput
where you'll find a significant contribution from the muscles of the arm. But how far would the shot go if the athlete did not use their legs and or rotate their torsos. How much weight would this athlete
be able to handle wihthout using their legs even as the triceps is an important factor.
As I said in another post on this topic you can choose to swing in a way that uses the trail arm triceps as a power source but you would not be swinging like 'skilled' golfers in numerous studies and you would be swinging in a way that is consistent with slower clubhead speeds at impact in numerous studies.
BTW - The right hook as demonstrated is not using muscles in the arm to provide speed. The speed comes from torso rotation (that starts with the legs) and muscles in the torso like the pecs that manipulate the upper arm.