Yeah, that WC guy goes around and fights trained people to show how good WC is. I'd like to see him go against a Bjj blackbelt, just to see how he would utilize WC to respond to a dominant grapple and ground game.
A striking focused art isn't gonna do well on the ground? Aren't you insightful!
Next thing you know, my hammer won't be able to screw a nut onto a bolt!