My interpretation could be summarized in similar fashion as "really, really, don't talk about politics on LessWrong" - whether this is "consistent" or not depends on your definition of that word.
I agree with your interpretation of the point of the story... and with pretty much everything else you wrote in this comment, which I guess leaves me with little else to say.
Although, that's an example of another issue with political forums, isn't it? In an academic setting, if a speaker elicits informed agreement from the audience about their subject, that means we've all got more shared foundational material with which to build the discussion of a closely related subsequent topic. Difficult questions without obvious unanimous answers do get reached eventually, but only after enough simpler related problems have been solved to make the hard questions tractable.
Politics instead turns into debates, where discussions shut down once agreement occurs, then derail onto the less tractable topics where disagreement is most heated. Where would we be if Newton had decided "Yeah, Kepler's laws seem accurate; let me just write "me too" and then we're on to weather prediction!"
Summary: I propose we somewhat relax our stance on political speech on Less Wrong.
Related: The mind-killer, Mind-killer
A recent series of posts by a well-meaning troll (example) has caused me to re-examine our "no-politics" norm. I believe there has been some unintentional creep from the original intent of Politics is the Mind-Killer. In that article, Eliezer is arguing that discussions here (actually on Overcoming Bias) should not use examples from politics in discussions that are not about politics, since they distract from the lesson. Note the final paragraph:
So, the original intent was not to ban political speech altogether, but to encourage us to come up with less-charged examples where possible. If the subject you're really talking about is politics, and it relates directly to rationality, then you should be able to post about it without getting downvotes strictly because "politics is the mind-killer".
It could be that this drift is less of a community norm than I perceive, and there are just a few folks (myself included) that have taken the original message too far. If so, consider this a message just to those folks such as myself.
Of course, politics would still be off-topic in the comment threads of most posts. There should probably be a special open thread (or another forum) to which drive-by political activists can be directed, instead of simply saying "We don't talk about politics here".
David_Gerard makes a similar point here (though FWIW, I came up with this title independently).