Why is every opinion qualified as "ex-military" always tend to be hyperbolic, technically incorrect and full of appeals to authority rather than actual factual information?
> There is no real-world situation where you are really just that much better at drawing and firing accurately that you will out-draw an adversary who drew on you first
There is, and it is called training. Get a timer, hit the range, and get your shots on target from concealment in under a second - while getting off the "x" - this is a standard I have trained many people to meet first-hand. And it doesn't take a specialist to get this level of training, either; it takes a few years, several thousands rounds of ammunition, and periodic maintenance, just like any craft.
> In a real world firefight you're either close enough where martial arts is relevant or you're not. If martial arts are relevant, then the guns are irrelevant.
Disparity of force - another well known concept you ought to familiarize yourself, especially as it is one of the most critical elements of legal defense in a shooting.
> Responsible citizens carry their guns in such a way that prioritizes the safety of those around them before their own personal safety.
Smart people legally carry a firearm to defend themselves and their family only from unexpected deadly threats. They would never intervene, get involved with, or otherwise "rescue" anyone else with lethal force. The "sheepdog" mentality you've put on display is honestly offensive and gives a bad name to firearms owners.