Point is a good one about mind set and training. The rest is good ole PROPAGANDA.
They're right in the fact that MOST, to include LEO's, don't have the stress training to react in most combat situations. NOT sure how I'd react to the intensity myself except that;
Situational awareness keeps me alerted to people, places and things in my immediate surroundings.
A mind set that I will react to a threat with my mind first, weapon second.
If I draw, I shoot to center mass. Two rounds, check and repeat if necessary. Cognizant of my surroundings as always.
"The smallest minority on earth is the individual. Those who deny individual rights cannot claim to be defenders of minorities." --author and philosopher Ayn Rand (1905-1982)