Even uncontroversial statements of fact get down-voted.
Take this:
>"Also, I don't think vouching for [dead] comments actually does anything beyond warm fuzzies." //
assuming the commenter didn't lie then it is a fact, they started their thought. Now the down-voters may know vouching revives comments, but that's no reason to downvote, that's reason to respond with a source.
Even if they are mistaken, it's harsh to downvote a view that can't be easily corrected because of hidden information.
Meh.
I don't believe it is quite so simple. Remark ordering also appears to incorporate
* freshness (new remarks get a moment at the top)
* reputation (remarks from high-karma accounts linger higher, longer)
and I may possibly have also observed:
* a penalty box: hidden downweighting, or reduction in effective karma, imposed by moderators upon troublesome users that weren't egregious enough to ban/shadowban.