It does if it reveals that the core of the plot/stakes was a badly-written fairy tale!
it's like none of you have ever watched Newhart or anything
It's a creative choice. You're welcome to dislike it as much or as little as you want, but it doesn't render everything before it meaningless, useful, or bad.
If The Dark Knight rises comes out and is terrible, you're not going to say that it makes The Dark Knight and Batman Begins worse. How is this any different?
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