I have to disagree...a child could not read Orwell except to understand that there were talking animals. A child would have no concept that the story represents the Russian Revolution. Orwell was not known to be simplistic either in thought or language. He did, however, believe that we should not CHANGE our words or lose our words (Newspeak), and on that account I would agree.
We have to keep a sense of academia in our language, or we lose our standards. If you go back in history, you can see how our language incorporates all sorts of classes ans words: Germanic (vulgar), French (Middle), Latin (High).
I appreciate our variety of words and the choices we have in English--especially as a Language Arts Teacher. I hope we never lose the high standard of academic language and our choice to use the vulgar terms and words of our own choosing.