How I read it, the author's point was that it's surprising to see this at the top of K-pop charts, and Western folks watching it really aren't getting the true message; they're just laughing at him acting wacky.

Take it from this gringo, you can tell he's being at least a little facetious even just watching it cold with no knowledge of Korean language or culture, let alone the artist's discography. The only question is how much of it is skewering a group he's not a part of versus how much he's including himself in the group being lampooned. I'm assuming it's at least a little of both.