He makes some good points. One that caught my attention was that "survivability is predicated on ability to see the threat early and make quick decisions". Recognition of the threat is something that I've found that is key.
When I was more active training in combatives, we'd do drills or scenario based training. Then we'd mix in some randomness and induced stress. For example, there would be say 4-5 of us hitting bags and then have attackers with a variety of weapons staging behind them. You'd have to turn and recognize the threat and react/disarm accordingly. Many times, you know how to perform the disarm for a particular threat after many reps, but I've found that it's pretty common to have a sort of "brain pause/freeze" while recognizing the threat. Take that a step further and the training is where you know there is going to be an attack, but whereas in reality it probably will be random, unprovoked, and happen very fast. That that pause in recognition can be the difference.
I've noticed similar in real life with regard to lacking ability to ascertain the threat and make quick decisions. For example, I've been at a venue where shots were fired a couple of times. Both times, I didn't realize that shots had been fired until well after the threat had passed. As it turned out, the group I was with was never in real danger, but none of us realized it until much later.