This is the comment a super villain would make if he wanted less competition.

I don't think it's productive to think this way. Yvain wrote a great post which I currently can't find where he points out, among other things, that it's generally a bad idea for your primary reaction to an event to be a reaction to how you think it fits into an overarching narrative (e.g. "this just goes to show you can't trust those dirty Greens"). The LW community doesn't strike me as homogeneous enough that it's productive to model it using in-groupiness, cutesiness, and attached-to-actual-changiness parameters that can be inferred from current posts and that determine the value of future posts. Evaluate posts separately, and if you want to model something, model individual users. And for what it's worth, this post isn't typical of the kind of post I want to write.

Would your reaction have been substantially different if this had been posted in Discussion?

I want to upvote your comment, but I can't bring myself to do so without hearing more about your reasoning. Without it, your comment reads like a mere personal attack.