People can reasonably differ, of course, but I don't agree that barely any negatively scored comments deserve to be there. I look at all the negatively scored comments, and the vast majority are either not substantive, not civil, or both.
It's true, though, that some substantive, civil comments are getting unfairly faded out. We're asking users to give those a corrective upvote when they see them. This is a longstanding HN practice. It usually only takes one or two corrective votes to get a good comment back to par, so every user can make a difference.
Overall, this experiment appears to have succeeded in addressing the epidemic of highly toxic comments. That was our main goal, because those had increasingly been poisoning HN. That doesn't mean, though, that every other effect has been good. If rallying the community to do more corrective upvoting doesn't turn out to be enough, we'll eventually take other measures.
All: please don't add comments complaining about downvotes, though. It just adds noise.