And no one was surprised.
That isn't the script as Fenix pointed out.
So apparently people are seeing some religious meaning behind this film. The story of food believing they are being taking to a better place(heaven) only for it to be revealed that it was all a trap. And the main hotdog character is seen as a heretic for trying to tell his people the truth.
Honestly if there is some clever social commentary beneth all the sex jokes and puns I'll give this film some credit