You could think of it as helping the popular thing a little. But on the other hand, when you make a video about a popular thing with a title like,"[Insert popular thing] sucks!," you are riding on the popularity of said popular thing to get views for yourself and your message. And so you are helping yourself and your message much more than you are helping the popular thing.
And it's a good thing if anyone who hasn't heard of or seen Gangnam Style will go watch it after watching your video because they need to form the association between the advocacy of killing and raping innocents with hip-hop and "clubbin'" music. That way the next time they hear such music they will think of degenerates advocating the killing of innocents.
Why not completely blackball this Psy degenerate have the Gangnam district philharmonic orchestra or something play national anthems, military music, and other patriotic music of South Korea and America. What jackasses we have occupying the white house.