Poor Rousey. Back when she was up-and-coming, and Miesha Tate was popular, it was cool to say Ronda was hot, and Miesha Tate wasn't all that. Now that Ronda's mainstream, it seems like saying she's ugly has become the "cool thing", and some other unfortunate up-and-comer or lesser-known fighter, who will undoubtedly get the same treatment if they make it big, temporarily holds the crown now.
I'd say Paige VanZant, but I'm guessing, since she's in the UFC and on her way to stardom, that it's probably cool to downplay her too.