This, is...wow. As someone that champions personal integrity, seeing this in action is more than depressing. I don't have the proper words for it...
But, in the interest of being objective, I must say that that photographer seems to be a rich guy that is aloof. He is walking around with what looks like a D700/D800 and 70-200 f/2.8. That is between $3500-5000. You don't do that, especially like a necklace. Second, you NEVER EVER NEVER take your hands off your camera. I sometimes have my camera on my strap, although I prefer Lauren's MO with holsters and in the bag when not directly in use, but when it is out, my hand is ALWAYS on the camera. Because I use an OP/Tech Sling Strap, it is also pointed down towards the ground at my right hip. Always.
Last, but what blows my mind the most, is that he doesn't realize for at least TWO FULL SECONDS that his camera+lens, hanging on his NECK just dropped in weight by at LEAST 75%. And then that doesn't happen until he finds that his finger went into the lens mount as opposed to against the lens.
Regardless, it makes me even more grateful in light of my most recent experience with "losing" gear.
I Left My Camera Bag on a Train...
-Heie