Not only is there a lot more content on the blog about the topic but Haidt and Rausch have several public Google docs where they keep an ongoing list of evidence for and against their hypotheses.

Every time one of their articles gets discussed on HN (which happens at least once a month at this point) the discussion goes in circles about evidence and causality without engaging the meat of the content.

HN just doesn’t have any mechanism to promote long term discussions about this topic.