he wrote, "The problem has several components: comments that are (a) mean and/or (b) dumb that (c) get massively upvoted."
That's still the key issue. In the view of the site founder, who has had a registered account here for 1684 days, many of the high-scoring comments carried a false signal of quality, likely to mislead users about which comments are factually accurate or helpful to the community. If some change of voting rules or comment karma visibility brings about higher scores for good comments, and lower scores for mean, dumb, or other bad comments, that is helpful to all readers of HN.
Feel free to review the site guidelines
and the site welcome message
for guidance on what is desired here and thus guidance on how to vote. I defer to the site founder on all issues of site governance. I have found HN largely to be a worthwhile website for my 914 days as a registered user, and my interest is mostly to make sure that the site founder and the members of his volunteer editor ("curator") team
continue to enjoy the site and find it useful for themselves. They are doing a good job, and I want them to have incentive to keep up the good work. On my part, I have been able to find good comments more readily since the comment karma scores were hidden than I was before.