All good info; and, if you've been watching "Masters of the Bare Bow" Vol III, you've seen two of the top bare bow shooters in the nation shooting a gap method, although they both go about it a bit differently.
Instinctive shooting does work; however, even G. Fred Asbell admits that it takes many, many hours of repetitive shooting to give your brain the time needed to learn the arc of the arrow needed to hit that spot at different distances.Additionally, it is imperative that you have good vision, because instinctive shooting requires being able to see the arrow in flight, as well as the impact point, no matter the distance.
On the other hand, using a gap method, as taught by Rod Jenkins or Larry Yien, can have a person with good form shooting decently in a relatively short period of time. So it's really up to you to decide which path you want to choose. And, as some have mentioned above, just because you decide to go with one approach does not mean you won't use aspects of both or even that you won't, over time, switch completely to the other method of shooting.
As long as you keep the fun in your shooting, you can't go wrong no matter which path you choose!