In target archery you got all day to set up the shot. In hunting you will have much less time to make it happen.
I see it quite often when hunting, and as he would explain in further readings, game animals just don't wait for you to get all lined up.
His swing draw, no hold at anchor, fluid style, allows you to get in tune with moving things. His quick shooting style surpasses all but the rangefinder/gap methods in terms of raw accuracy.
Then on game, ha ha, by the time you got the rangefinder out, never mind the gap set on target, he'd already have a 90# cedar shaft through the "target." No EFOC, no F/F.