I think it's because there's a dance that goes along with the song. I'm not sure if you're old enough to remember the Macarena, but that annoying song was everywhere for awhile......all because of the dance that went with it.
I don't like it personally. Something to just dance to yes. But in the song he's speaking Korean that's why no one can understand. I listen to German Metal (ex. Rammstein) and German Techno rock (ex. Eisbrecher) and I listen to WW2 music and I speak German so I know what their saying and I speak a little bit of Russian so I know what their saying but I listen to music of all countries it's the the tone of the music is what makes you like it. That's like asking someone from another country why they like American rock and metal.