That was not Homer Kelley's conclusion. Enjoy the exact words of The Master:
And not having to 'Rotate the Plane Lines' [Ed: to curve the Ball.] -- gee,
that's a tremendous advantage. But, it is harder to learn, but lots
easier to execute once you've learned it. Much more individual. You feel like
you're controlling every little ingredient."
"I think it's great."
And there you have it.
Can you explain why the hitter does not have to rotate the plane lines to curve the ball?