I think what this article was saying, is that people are promoted to center court on the basis of sex appeal and heterosexual orientation NOT because they're good tennis players, sounds like you might need a refund on that private school education.
Now I'm no liberal, but the point of competition is to see who is the better athlete, who has better athletic skills. Attractive people and straights are no better athletes than ugly people or gays, so that should play no part in deciding who plays. The whole point of a competition is to see who has better skills, not to give someone an unfair advantage. If that was the case, then I would agree: why have a competition at all?