Interesting but VERY complicated.
The question posed by the video title isn't answered within the 1st seven minutes so I gave up.
I assume the answer is that amateurs don't use enough different reverbs & delays or have them set in oh so many ways as the gent presenting the vid. In the end his song sounded wet which would, to me, be a beginner's mistake.
Lots of cool ideas and VSTs but nothing, in trms of a work flow, that I would care to duplicate


Cheers
rayc
"What's so funny about peace, love & understanding?" - N.Lowe