You're arguing with and algorithm that says if comments > points then downweight. It's to avoid typical internet flame wars, it's not some rejection by the community or whatever you're inferring. It's just that it rehashes tired and well trodden internet discussions that aren't very interesting. What would you have rather seen happen? It stays at the top so people can pile on about how bad climate change is?
Edit: I'm wrong about the reason, because the comments aren't more than the points. But the point stands, it's algorithmic, it's not some conspiracy against discussing climate change. It's that it's a boring discussion that doesn't add to anyone's understanding.
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