Dave, I've described my draw in painstaking detail over the years both on TFL and here.
Obviously, my finger can't touch the trigger until the gun is out of the holster, and it doesn't until the muzzle is coming up onto the target. In many thousands of dry fires, LaserBlaster, and live fires practicing my draw, I've never had anything but the hammer falling exactly when it was supposed to, but that's because all my muscles act in harmony -- sort of like sticking a landing. My finger is never allowed to act on its own -- also a skill needed for typing....
I'm not going to parse and comment on your comments as you can yourself to see that most of them are non-sequiturs, but one of the rules is don't draw until you need to fire. Before the gun is ever touched, the decision has been made, and there will be no time for a perp to raise his hands. However, the fact remains that MY final decision point is when the gun is precisely aimed at the target, which leaves me with the opportunity to NOT fire.
That's also an important part of practice. Draw, but don't fire.
My technique isn't for everybody, and it certainly shouldn't be adopted without a LOT of snap cap practice -- but nothing about gun handling should be adopted without a lot of safe practice.
And that's the biggest problem. People with guns don't practice enough....
The negligence video you linked to is a study in incompetence all by itself. The Las Vegas Metro cop was woefully incompetent in every aspect of gun handling. She not only continuously swept the subduing officer and perp before firing, her gun was aimed at the ground in front of the perp when it fired. Her finger should NEVER have been on the trigger!