I love the part where the 'boxer' stands there doing nothing as he reaches out and grabs the 'boxers' hands.
For some reason I imagine a boxer throwing a punch as soon as his hands start reaching forward...
I love it when a boxer throws a jab and the other person just stands there and blocks. Every time they do that I just see someone kicking their front leg.
I'm not really trying to be flippant, but you see my point. He's nerding up his explanation, but all he is doing is entering a clinch by touching the forearms and then throwing a couple of short punches. I'm sure he's just cocky because he's done martial arts for decades and only ever sparred boxers with like 3 weeks of YMCA experience.
Edit: this guy is giving away something for free. If you believe for a minute that he has faith in this move because he has done it, how do you know you aren't vulnerable to it?
People put a lot of faith in their high guard. I like to throw the roundhouse kick behind it into the ribs on people who haven't sparred me before. It works because a lot of people see me kicking right at the guard and believe that they are safe, or that they are going to catch the kick, so they just stand there and let me do it. This technique is the same thing. It really works on less worldly people, because they see your hands come out, don't feel threatened, and let you touch. The counter is easy. Just pivot and hook, or probably just start hitting him in the face when it starts, but that isn't what happens.
When someone doesn't feel threatened by your movement, they are just as likely to stand there and let you do whatever it is as they are to attack. An opponent's vulnerability to this sort of thing is easy to detect, so if you get in front of them and realize they will just knock your block off for trying this sort of thing, you don't have to do it. From a self defense stand point, if your opponent is going to give away the touch, you have to take it.