Structured competitions require some rules and restrictions though, to keep things fair, beyond just being ‘equitable’ to minorities.

The question then becomes whether this ruling is fair. No one's questioning the need for rules.

I can only speak for myself on this matter, but as someone who competes (albeit at an amateur level), this would not detract from the fun of the sport. Even if they end up at the top of the podium, that's no different from running into a genetic freak. If you have five of them taking up the top five spots in the rankings? Then we'll talk.