On that same post I pointed out how the "free upvote" is basically just a nerf to downvotes (those getting downvoted, whether justified or not, can use the "free upvote" as a sort of shield, which can be harmful as often as helpful). While that would help with "bad" downvotes, it would also hurt the value of "good" downvotes. I'm far from convinced it really helps overall, and could very well make matters worse overall.
At some point, people have to just accept the fact that voted rewards are a sort of consensus-finding process, and if enough people/stake don't agree that the rewards should be paid to someone or some content, for whatever subjective reasons, that isn't consensus, and the rewards won't be paid (or less will be paid). The total amount of rewards, system-wide, will still be paid, they'll just go somewhere else, somewhere less contentious and more aligned with consensus. One poster's loss is always other posters' gain. It is a zero-sum game in a short-term sense, and inherent in that is that not everyone can win.
RE: Although subjectively downvoting posts to zero is anathema to me, the Layer 1 ability to do so must remain (for now at least)