the way I see it we are not doing anything new, we are re-inventing the wheel, no different that yesteryear when guys tossed tin cans in the air and then shot them right quick.
I think its more just "rediscovery".
That, and the fact that some schools/instructors, like Suarez, are teaching/pushing it in a more realistic course of fire.
Once Cooper started pushing the modern technique, it seems like things were more sight focused/oriented, and its remained that way, up until now, and is still the main school of thought with most. Places like SI have broken those chains and moved on, a lot havent, or are late to the show.
Im in no way saying unsighted fire is the only way to shoot, its not, but I do believe, its the proper response, as the distances and danger closes. Your brain is wired to do certain things, and is going to do what it does under those circumstances, no matter how you train, as is often shown, in some of the police gunfights. Why not take advantage of that, and expand on the skills that expand on that, instead of trying to condition something else, that your brain is likely to override anyway.
A lot of this can be practiced for dirt cheap, right in your house, or out in your yard, simply by picking up one of the Airsoft gas guns that mimic your carry gun. They work with your carry gear, and are more than accurate enough for informal target shooting, and are great tool, for actually fighting someone else who is similarly equipped.
You will learn more from them in this respect, than you will shooting tight little groups in bulls eye targets at the range. Something I personally consider a waste of ammo. All that shows is, you have the basics down, and can demonstrate that. I would truly hope, that everyone who is carrying a gun, can do just that, at a reasonable range, and do it on demand, with any gun they carry. Scary thing is, from what Ive seen, that doesnt seem to be the norm.
I understand a lot of places wont let you practice "realistically", and Airsoft can be a way around that problem. Nothing is perfect, but it does get you a lot closer to real than most other things available to the general public.