well i can't see the video at work, but I will comment on "natural POA"
There is nothing natural about POA, it is what you are taught or not taught.
I see so many young shooters come through and their "natural POA" is what they saw in the movies or learned from an idiot relative.
"natural POA" is also a factor of the design of the weapon. some weapons force you to hold them a certain way that would increase the "accuracy" of the weapon in the hands of an untrained shooter, while other weapons (read american rifles and some semi auto pistols) have ergonomics that were designed by rabid monkeys and actually detract from the abiltiy to shoot the weapon "accurately" and consistently.
Lifetime member VFW and NRA
"Quando Omni Flunkus Moritati" (when all else fails play dead) -Red Green