Well.... the applications were horrid but lets leave that aside.
First off IF you are going to do ANY grappling you would not use a Dobook ( Korean Gi), they are NOT made for grappling.
Second, he OVER exagerrates the "concaved" chest which greatly decreases his ability to express any type of power.
Third, while the moves are fluid ( yin) they lack power and explosiveness ( yang).
Forth, His structure isn't very good.
Looks more like a korean attempt to do "kung fu".
Psalms 144:1
Praise be my Lord my Rock,
He trains my hands for war, my fingers for battle !