I think what one must apply to this video is the context and audience to which he is presenting. This is a very specific group of people he is talking to whom KNOW the environment he is referring to. I have worked with Agencies from around the world to optimize dispatch and communications systems for police, fire, and ems. In my experience, you have two groups of guys/girls at every site. Those for which this is a calling and those for which this is a job. While I agree that (some) mindset can be taught, it certainly is not something everyone can or more critically wants to do. I won't go into that subject itself. It's obvious to anyone who watches this which side he is on. I can tell you for fact that he is the exception, not the rule. Guys who do SWAT and those roles have that mindset already. It doesn't mean his message is not important for others to understand and one I would expect to take in his role, but I also agree with Peejman that most either have it or don't.
I will probably get some flak for this, but I think some civilians that watch this think "Yeah, that's what I should be doing" from a mental standpoint are kidding themselves. I believe there is an overwhelming tendency by many people who like the tactical side of guns to think or even worse, daydream about being a hero in life and death situation. They think they have went out and put on a thigh holster and practiced shooting and they are prepared. We all know that guy. That guy is most likely to have no clue what it will take to actually win.
I certainly believe training is good and am not trying to say it isn't, but in the end for me, what I think becomes most critical for anyone in such a situation is to be able to mentally keep things slowed down during the situation. For me, that isn't specific to just this situation. There are many cases in life where we all know people who will either remain calm and do what is needed or completely freak out under stress. Training helps one be more confident to hopefully be able to more readily remain calm, but stress is the unknown player in all of this. Some people no matter how much training they have can't overcome the stress. And for most of us, physical fitness is non existent which also reduces our decision making capabilities under stress.
So for me, what I think is important is know your own capacities. While any of us could be in a situation where our life is in danger, it is not the same as pursuing danger for your job as he is outlining in this video. I love his saying of don't fight to survive, fight to win. If I took one thing away from this, that is it. If you aren't in it to win it, don't get in it if you have any other option.