Holy crap, have you picked a bad comparison, if you're trying to refute my point.
Edit: To provide a bit more context: Mating dances in most bird species are not direct indicators of evolutionary fitness, but they are what is selected for. SCA events, Fursonas, and the like are the postmodern equivalent of mating dances. They are Conspicuous Consumption, Veblen-good displays of "I can spend my time doing this self-defining thing instead of productively". That's fine and dandy. I'm not judging people for making their mating dance some form of roleplay (because most any formal competition displays the same traits).