I moved the big meta-level comment thread from "Yes Requires the Possibility of No" over to here, since it seemed mostly unrelated to that top-level post. This not being on frontpage also makes it easier for people to just directly discuss the moderation and meta-level norms.
IMO, on-topic is a strict subset of what is allowable on LW. There are plenty of topics that are about rationality (especially about group rationality and social/peer norms) but don't work here because they're related to topics that tend to trigger tribal or social status problems.
I'm starting to see that "on LW" is different for me than for at least some readers and moderators - it may be that I'm too restrictive in my opinion of non-promoted posts. I'm still going to downvote them.