Just my opinion of course, but:-
I think we are in danger of falling into the trap of thinking there is a "correct". There isn't! It depends on the bow, the archer, the circumstances and how they have learned.
Take an olympic archer give 'em a short primitive bow and stick 'em in the bush waiting for small game and see what good "form" does for them. Stick him on a roving marks course with a long draw Korean bow and see how they do.
Del