On one hand, identification of misinformation is a good thing. On the other hand, initiatives like this often end up highly partisan to the point where the label of misinformation is arguably misinformation in and of itself. E.g. I've seen redditors involved in these subreddits try to claim that saying capitalism is good for society is misinformation. My prediction is that this will essentially end up like Rational Wiki.
How about quit posting this garbage to HN?
Fighting fake news on Reddit it’s like fighting for privacy on Facebook or Google
These people are fighting misinformation with misinformation