I agree with you that its a false dichotomy, but I'm not entirely sure that I can become friends with a girl on OKC who is not otherwise attracted to me. In my mind, she's not here looking for friends, she's looking for potential suitors, and if I'm not one, she simply doesn't respond or responds in a perfunctory manner, and never invests the time that would be required to make a new friend. If she does, our friendship is tainted by the knowledge that I am attracted to her (otherwise I wouldn't have contacted her in the first place), and then we're in the age old question from countless romcom chick flicks.

Yes, it's possible, but if the objective is to maximize close friendships made per time spent socializing, OKC is not the most efficient way to do so. meetup.com is.