I did NaNoWriMo once, intentionally avoiding genre fiction for this very reason. The result was sloppily written and kind of a mess, but nothing compared to this shit.
I think NaNoWriMo and TvTropes has this in common. They are both premises that, on their face, are sound, harmless exercises in narrative, but when opened up to the cesspool of the internet, becomes something so bad it's F+ worthy.