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.
This is probably because I don't know what the epistemic problem is. I only know about the linked post, which defines things like this:
I sometimes round this off in my head to something like "pure decouplers think arguments should be considered only on their epistemic merits, and pure contextualizers think arguments should be considered only on their instrumental merits".
There might be another use of decoupling and contextualizing that applies to an epistemic problem, but if so it's not defined in the canonical article on the site.
My basic read of Zack's entire post was him saying over and over "Well there might be really bad instrumental effects of these arguments, but you have to ignore that if their epistemics are good." And my immediate reaction to that was "No I don't, and that's a bad norm."