Additionally, you could rephrase from "downvote" to "rebuttal", which I think makes it more clear that not only is the opinion/post unpopular, but that there is

Additionally, you could rephrase from "downvote" to "rebuttal", which I think makes it more clear that not only is the opinion/post unpopular, but that there is information that contradicts the OP's post. It could make for a more substantive phrasing