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.
Zack didn't say this. What he said was:
Which is compatible with thinking more details should be taken into account when the statistical arguments are applied in other contexts (in fact, I'm pretty sure this is what Zack thinks).
Discussion of abstract epistemology principles, which generalize across different contexts, is perhaps most of the point of this website...
Your points 1,2,3 have nothing to do with the epistemic problem of decoupling vs contextualizing, they have to do with political tradeoffs in moderating a forum; they apply to people doing contextualization in their analysis, too. I hate that the phrase "contextualizing norms" is being used to conflate between "all sufficiently relevant information should be used" and "everything should be about politics".