Good to know. Unfortunately, since comment upvotes and downvotes are restricted features until you reach a certain level, but one's comments will probably be up

Good to know. Unfortunately, since comment upvotes and downvotes are restricted features until you reach a certain level, but one's comments will probably be up/downvoted before getting there, a logical, if wrong, conclusion is that there IS a submission downvote feature, but one just can't see it yet.