Those targets don't seem to be shooting back. Yes you can train muscle memory, a lot... BTDT... still doesn't account for the sudden influx of adrenaline and the psychological effects that happen when you are actually in a life and death situation. Judging by your condescending tone, I'd say the closest you've been to one of those situations is when you choked on food, or maybe nearly lost control of your car. I'll bet Cha-lee has never heard the "VOOOM" of a bullet passing through the air over head coming in your direction. Now have that happen several times, in a short period of time, then while your mind is moving at 1mi/min attempt to hit a target the size of a watermelon- that's moving. Actually smaller, because there have been several cases where headshots have not stopped the attacker. Easy on a range, in practice, when SHTF? I'll believe it when I see it.
Still, a lot of things go to complete shit when you get a no BS adrenaline dump and the physiological effects of fight/flight come into play. I've heard of the most seasoned veteran LEOs, with expert training, weekly intensive practice, and they said their accuracy wasn't even close to that on the range when they got into a shootout. I don't doubt people have the skills to compete, or even handle themselves in a shoot out, but like an old NCO told me the day before I went to the 'Stan: "A lot of guys are talk, but until they're in the middle of the shit, we'll never really know."