Guess you didn't watch the 1st Video because at 22.30 he specifically talks about a "hyper critical short turn on the LS7 and LS3.
Again he's talking about "WET FLOW" and how people who think in "AIR FLOW" mess it up and wonder why it doesn't make power. HES LOOKING TO CONTROL WHAT THE FUEL DOES NOT JUST THE AIR!!!!!
Agree 100%
It doesn't matter if you use swirl or not as long as you can maintain a homogenous mixture at the time of ignition. Think about what it "DOES" not what it "IS" its about the quality of the MIXTURE.