Scrod...you still gonna measure your fork for this guy?
op...your statements to the effect that your preferred stack & reach measurements are the accepted industry standard & the best way to fit a bike, are way off base.
it is simply that guy's own creation & he is promoting it. after close to a decade of pushing his bike fitting program he has gotten a limited number of manufacturers/teams/fitters on board with him which indicates that it is far from the big deal that you make it out to be.