By the by the name of the Korean dude's song is pretty funny, given that the most infamous of Daft Punk's many borrowings was Robot Rock.
Also, I don't think the original video is still up; the claim that it was posted in 2011 is based on other sources that I haven't bothered to check. So I guess it is vaguely possible that Daft Punk are punking everyone with a little bit of Internet humour by creating a video based on their own tune and then circulating a rumour that they ripped it off.
From what I've read, though, it seems like the vid is probably legit and may actually be from as early as 2007.