so true. but, i don't get one thing....why didn't they just ask? The Equestrians would have understood. She should have just told them they were hungry, and that the Equestrians had a surplus of what they needed to feed on; love. give the ponies time to understand, the ponies would accept them, and give them what the wanted. While they wouldn't feast, they would have a steady supply of food, and Changelings being able to both fly and use magic, would make great helpers for the common people, any restaurants or establishments that are short on han- i mean hooves would easily get the needed workers. in no time, with how easily ponies trust others, they would become an accepted part of society, and not have to worry about food shortages. Chrysalis would not have much on her plate, as all she would need to do is keep them in check. She already seems to do this, so she would have an easier life.
In Equestria, they are basically on defcon 1 during Hearts and Hooves day because of the Changelings. On Earth, we aren't on any defcon level during Valentines day since we aren't expecting love eating bug-parasite-ponies to invade.