Earlier quoted context omitted.
Disagreed. If downvoting meant "you are wrong", then it would be kinda like a black-hole if it weren't accompained by a reply, because the obvious follow-up question "why is that wrong?" would go un-answered, and thus nobody learns. Since learning is what we are here for, please correct "factually wrong" posts with a reply, not with a downvote. It seems more correct to downvote those posts or replies that do not foll…
It is not an either/or - you can both vote and reply. Thoughtfulness has little correlation to the quality of a comment. A one-liner from a subject matter expert is worth more than an entire paragraph of mere hearsay.
I think one liners, unless they are reminders of something that's universally obvious, are worse than no comment at all, because they can't contain much information.