I think the reason you're hitting a lot of resistance here is that yes, there are backchannels, but no, your assumption of them being mostly abused is incorrect

I think the reason you're hitting a lot of resistance here is that yes, there are backchannels, but no, your assumption of them being mostly abused is incorrect. Based on my observations over the last two years, the cases of abuse are very rare, usually dealt with very quickly, and are much less of a problem than the larger issues with HN, such as growing uncivility (which your rash accusations don't help) and the dilution of the site with politics/vague-economics articles.