Maybe, it could change in the future, it's just that as of right now, I'm skeptical that was the case due to that lack of advertising.
Thinking about it, I wouldn't be surprised if what happened was GF suggested that he put in a Gen 6 Pokémon, but just let him go with the one he liked the most. At that point in time, they barely existed yet anyway, and for the most part Gen 6 pokemon were on the wayside in terms of advertising compared to Mega Evolutions like Charizard (especially X), Mewtwo and Lucario. So with that in mind, it's definitely possible that they did give him that much leeway.