I don't place much stock in the notion of "instinctive shooting" as we tend to use the term loosely and mostly in error . I'd say for 99% of us it is more exactly "intuitive gap shooting". yes, I would claim that we are all "gap" shooters whether we realize it or not. with enough proper practice, muscle memory and a repeatable sight picture permit the act of shooting to become somewhat of an unconscious act at close ranges, say under 25 yards whereby we point and shoot, letting our brain and muscle memory do the rest. there have been times shooting at deer that I do not recall drawing my bow, only seeing the arrow fly because I was so focused on the target while waiting for the right instant to shoot. it's always pretty easy to shoot at the whole deer unless you have a sight pin, and I would argue that failing to pick a spot is the cause of most misses or poor hits while taking reasonable shots at close range.
disclaimer: I am not a shooting coach or even an accomplished target archer. this is just my humble opinion based on my experience shooting and hunting big game with classical archery equipment for the last 30+ years.
