>>27408125Because we already HAVE a yellow, Fire/Psychic kitsune. And if Ninetales shared the same typing, the only thing setting it apart from Delphox would be its lack of bipedalism.
Even if Delphox never existed, jesus christ stop giving EVERYTHING Psychic. For years, Psychic has been a type that's often tacked on to a Pokémon to explain how it can use special powers, or to make it seem mystical, forgetting that Pokémon are already magical creatures to begin with. It's overused, lazy, and as it gets more common, it makes Psychic loose its mystic appeal because it's not mysterious anymore.
The controlling minds thing does actually lend itself to Psychic, and it even learns plenty of Psychic moves, and in fact there's a couple other things that would point to it being Psychic, but for such a uniquely mystical pokémon it just would never fit it. Ninetales is a kitsune, it's magic, it doesn't have much to do with mental willpower.