So I watched the video again and read all the comments.
Bruce Gray is kind of a big deal so it's not so easy to just say he's whack...
But I think what it comes down too is he believes a person can't knowingly take a shot without flinching, jerking, or some other pre ignition input that moves the gun off target. So the solution is to always be surprised by it to ensure you don't adversely influence aim.
I think the problem I have is I've spent all my time learning how to point the gun somewhere and pull the trigger without pre ignition influence because that's what Brian Enos said in his book is all that's needed to be a good shooter.
When I first started shooting handguns, in 2014, even with a totally relaxed grip I had a trigger jerk on at least 1/2 of my shots. Such that I would jerk the gun enough @ 25yds to pull the shot off a standard sized piece of paper.
Found that if I did the whole surprise break thing I heard about, and I didn't truly know when the gun was going to go off, and I kept the sights lined up, I could hit where I aimed, every single time I do so. Problem was that I was involved in practical shooting, and that shit is too slow, the easier thing to do was to just stop jerking the trigger, and make my trigger finger move independently of everything else(Most of the time).
Knowing what I know now, I wouldn't suggest ever the whole surprise break type of trigger press to anybody. I'd just suggest to them to stop jerking the trigger period, and deal with their inconsistent aim until they did so. It's an easy solution to a problem, but in the long run especially for a sport where speed is a factor, it limits a person's growth.