I know. He's using a deadlift bar to squat. What an idiot!!!!!
Yeah, those glasses aren't too pretty and squatting heavy can easily make your face look a little weird. Who gives a fuck? The dude is pretty strong, why make fun of him? It's not every fitness author who can walk the walk.
It eliminates the stretch-shortening cycle aka stretch reflex aka myotetanic stretch reflex and makes the lift harder/builds strength in the hole.