I can see your viewpoint as well Lou!
I don't just blindly believe people either. Actually quite the opposite. I distrust people a lot lol.
But I was intrigued enough to do some testing. And so far, all of my heavy for caliber ELDM and Berger kills have performed exactly how he's described, and VERY similar to seen in ballistics gel. I also have the photos and videos for most of them to prove it.
I just don't think what he's saying is very controversial. A small, heavy for caliber, frangible bullet, with a 2000fps impact velocity, creates a wound channel large enough to kill anything in North America. That is absolutely true, and have been proven.
Now it's totally a personal choice, on how small is too small for someone to feel comfortable, and how small is too small to have no error of forgiveness in shot placement in comparison to your hunting style and ranges.
I like the ability to shoot relatively long ranges if that's the only opportunity, so I'm sticking with the big 7mm's for my back country hunts. Great BC for bucking wind, decently large wound channel for some shot placement forgiveness with a bad wind call, and still pretty marginal recoil.
But I also took my 6mm for a ranch style hunt where I knew getting to 5-600 yards wouldn't be a problem. The 6mm killed no differently than the 7mm. Dead in 5 yards.