Maybe the thinking is: well, we know we can't make the music less degenerate or more inventive or anything like that--it would make the idiot masses' heads explode. But, we need it to seem like sort of an exciting challenge. So, let's base the judging on the degree of differential between two factors: (a) how closely their performance matches the status quo/exactly what is expected and no better; and (b) how much "muh privilege" the performer has. So, if you get a big fat ugly woman that can barely move like a human being, but her performance precisely satisfies the mundane expectations of the producers & consumers of the event, then she will win.