For example, what would be inappropriately off topic to post to LessWrong discussion about?
I couldn't find an answer in the FAQ. (Perhaps it'd be worth adding one.) The closest I could find was this:
What is Less Wrong?
Less Wrong is an online community for discussion of rationality. Topics of interest include decision theory, philosophy, self-improvement, cognitive science, psychology, artificial intelligence, game theory, metamathematics, logic, evolutionary psychology, economics, and the far future.
However "rationality" can be interpreted broadly enough that rational discussion of anything would count, and my experience reading LW is compatible with this interpretation being applied by posters. Indeed my experience seems to suggest that practically everything is on topic; political discussion of certain sorts is frowned upon, but not due to being off topic. People often post about things far removed from the topics of interest. And some of these topics are very broad: it seems that a lot of material about self-improvement is acceptable, for instance.
Hi. Pleased to meet you, but I think you may have misunderstood. I wasn't declaring anything reprehensible on your behalf; I'm sorry to say that I was entirely unaware of your existence. And I wouldn't dream of suggesting that anyone who brings up autism is reprehensible; if you got the impression that I do then I probably failed to be clear enough and I'm sorry about that.
I'm glad that you aren't in any way annoyed, upset, offended, etc., at what Dahlen wrote. I still think s/he shouldn't have written it.
Now, if it turned out that, say, 95% of LW readers on the autistic spectrum are perfectly happy with what Dahlen wrote, that really would make a difference to my opinion of it. (I'd then be curious as to whether Dahlen was just lucky, or whether s/he is better than I am at predicting autistic people.) But for now, all I know is that one person who says they're autistic[1] says they don't have a problem with what Dahlen wrote, and that one probably different person about whom I know nothing upvoted that comment. Which isn't nothing, of course, but it falls some way short of being enough evidence to change my mind right now.
[1] For the avoidance of doubt, I think it's hugely unlikely that you're lying. I'm just being careful to distinguish things I know from things I don't.
Unless you take a survey, you won't get a remotely representative sample, but as one of the more activist/SJW-like autistic LW readers, I found the comparison annoying, although not really offensive, because it didn't seem like Dahlen was trying to reference actual autists. To steal and modify Yudkowsky's favorite Davidson quote, if you assert that autistics have below-average rationality, are childish, and are Spock-like, then you do not make any assertions, true or false, referencing autistic people. Rather, you're just using a stereotype as a reference point for talking about some other category.