Well, I know exactly what I'm looking at. Ken looks like he has the basics of the body movement down pat. However, he clearly lacks understanding of the actual process behind the power, he believes in the magical power of Chi, and is using ancient metaphors alone.
He is also double weighted at some point.
Also, it is indeterminable if Ken's material is combat viable as he teaches it. I saw nothing but pushes. But looking at his movement it likely is.
Ken, have you ever used your material to save your own life? That of others? How many times? Have you taught people who have? Your uniform gives me the wrong impression I think.