While Morello did say that, he is known to be highly opinionated and often has views that are minority at Riot. Otherwise we wouldn't have Kha'Zix and they'd have completely scrapped Deathfire Grasp (which actually they may still do for S3 since some items are being removed).
People seem to forget that Riot is a business so their top goal is to make money. LoL may be free to play but it is not a service. If chicks with massive t!ts, blokes with massive muscles, and super-cute yordles is what makes them money then that is what they're gonna make. Sure they'll toss in a few modestly clad ladies and the odd Void Champ to keep minorities happy, but that isn't going to be the mainstream if they want to stay in business. At least not until the player base gets over massive breasts, which isn't going to happen soon.