There was actually a chest routine he had that I tried (youtube killer chest workout), and felt growth after the second time I did it. He did high reps, to failure, is that a good method to try? Could it be an exercise done ever so often, to literally kick te muscle into growth.
I think what scooby (the guy who made the video) is doing is catering for people, by making videos targeting muscle groups (e..g arms, chest, back), but it would be better to concentrate on compounds, as thats where the most growth potential is. Scooby s just giving people a simple routine, for if, as an example, a guy wants bigger arms. He'd do the routine and feel better about himself, and not concentrate on huge guy exercises.
Also, does he work his legs? They seemed awfully small when he was sat down. Maybe it was just the angle.
He is though, good for coming up with ideas for new exercises (I'm actually subscribed to him on my youtube account).