What does that have to do with anything? Are you saying Uno can't have an opinion on a song unless he's personally produced a song of his own? That doesn't make a whole lot of sense. I imagine that most music critics, and most people who have opinions on songs haven't also produced their own music.
Discussion
Calling a song bad is a opinion, but calling it the worst song ever made. While he got no expirence of writing a song him self is just stupid. Specially Outkast one of the most inspirational groups in hiphop ever. But what do i know i only study music for 20years.
I get what you're saying, but I don't think he was asserting it as an objective fact. I took it as his subjective opinion. His phrasing was a common, hyperbolic way of expressing how much he dislikes that song. There isn't really an objective worst song because it depends entirely on the individual.
You are totally right, i was just bias because outkast does really good music.