Your post was poorly received because it tackled a confusing topic, and failed to bring clarity. All of the supposed counter-arguments are just confabulations. I expect Less Wrongers to jump on any attempt to analyze morality in abstract terms, regardless of its conclusion, because there's an extensive body of philosophical literature showing that such attempts produce only concentrated confusion.

Also, you shouldn't expect different individuals within a community to all advocate consistent positions. If they did, that would mean that either the question was an easy one and not worthy of further discussion, or the community was broken and suffering from groupthink.