On that statement....
If a dude cannot, yet, shoot his way out of a D class with a full sized gun, he and people around him are likely to be better served with him dressing around a big gun.
That fairly false note simply doesn't comport with the reality that millions of untrained people defend themselves successfully with all kinds of sub-optimal firearms every year.
As someone who makes a living training people and within my idealized vision of armed society, I want everyone shooting at A class/M/GM levels, deadlifting double bodyweight and to have at least a purple belt in jiu-jitsu. Probably not gonna happen.
When is someone "good enough" to carry a smaller gun?
It's interesting to me how much people fetishize speed and accuracy because it's measurable. Don't read that as me saying speed and accuracy are unimportant. But the trend of spending hours to shave off milliseconds often when many of these same people have physical conditioning that wouldn't allow them to sustain a 30 second real fight, is kind of like stepping over dollars to pick up pennies.
But this is Pistol-Forum not ProtectYourself-Forum so....sorta get it.