If I can apply fundamental shooting skills to the point of putting my rounds into a tight clusterwhen I choose to, I then have the options of a precise shot if needed or pushing my speed to put a handspan sized burst into my opponent's upper torso or head as rapidly as possible.
If the best I can do in practice is scatter rounds shoulder to shoulder and nuts to eyeballs, I won't do well if the only target I have is an opponents head and gun hand protruding from behind solid cover.
I agree that "combat" accuracy is more of a handspan sized group delivered as fast as possible, and most of my shooting practice reflects that.
If I'm sprinting off the line of attack while shooting one-handed. I'll settle for any center torso hits.
If they're all in a four inch circle, I can go faster.
If I have mostly peripheral hits with some off the target, I need to slow down, refine my visual index, or (most likely) stop "mashing" the trigger.
I do tire of hearing "any hit on the adversary is good enough" as an excuse for sloppy and unfocused shooting.
Mastery is simply applying fundamentals at a very high level. If you can't slow down and put bullets exactly where you want them, you have room for improvement.