All the creatures mentioned still DO exist, this guy is just convincing the world that they don't. Keep in mind, the Earth inhabitants are the ones that grow food. The Pegasi and dragons are supposed to take some food for themselves, and take the rest up to the ozone repair and L-E. And when they don't get food, who's gonna repair the Ozone layer? The Earth people are pretty much gonna drive themselves extinct, and the Kurrasi are going to go ballistic if their peeps are catching on fire or something because of a certain lack of ozone XD.