I find the Ern Malley episode a bit puzzling. Yes, if we're talking about, say the origin of a religious story, then it's possible to reveal the theory as false. But there isn't such a thing as "true" or "false" in prose. Even if McAuley and Stewart purposely wrote what they considered to be bad poems, what does their intent matter if they produced poems others thought were good? If I like a book, my liking of it doesn't become "wrong" or "mistaken" if it's revealed that the author was actually trying to write a bad book, anymore than me disliking a book becomes mistaken simply because the author was trying to write a good book.