Why would you call that pizza? Because it's flat? Are pancakes breakfast pizza? Are eggs Benedict really pizza? Is an open face turkey sandwich Thanksgiving pizza? If you take the top slice of bread off a ham and cheese sandwich, does it become a ham and cheese pizza? Is an plain old cheesecake only a name change away from being a deep dish cheesecake pizza? There is absolutely nothing pizza about that thing.
What the heck is people's fascination with calling things pizza just because they are flat?