I frankly agree with what you said. Same reason I don't take the plethora of "modern isosceles" technique driven courses. I know the stance, don't like it, and am not going to waste my money on it. In fact, I don't take any technique driven training courses, because I have worked out in my mind what works for me under what circumstances. I continue to take courses concentrating on teaching teaching and/or tactics.
I know we're all beating up on Marty, and frankly I appreciate with him still sticking around this thread.
However, good golly. I'll never go to an instructor who considers themselves to be at the end point of his learning curve when it comes to shooting technique. Whether it's shooting, cooking, fighting, driving, etc, there is never an end to the improvement of technique. Believing oneself to be finished with learning technique is the surest way to get left behind by the rest of the world.
Why not just tweak the grip with the gun? Seems to be quite effective based on the discussions in another section of this forum.
Sorry for asking too many questions. I am a technical guy and I tend to approach things a little differently than most. Not seeing much support for Weaver makes it hard to believe there is any advantage at all.
Think for yourself. Question authority.