This is a work of fiction. All the characters in it, human and otherwise, are imaginary, excepting only certain of the fairy folk, whom it might be unwise to offend by casting doubts on their existence. Or lack thereof.
I don't know whether a poem has be there to help to develop something. I think it's there for itself, for what the reader finds in it.
If people say something rude or off-color, you have to take it with a grain of salt, because they don't know you.

