No, it is better to get comments, even emotional and not well written. Because with comments I might understand where I was wrong, or at least know where exactly my opponent disagrees with me, because it I could have written a wall of text, not every sentence of it is wrong.
Even a comment like "fuck you you are dumb bastard hateful shit" tells me much more than a downvote. With comment like that I know that the opponent is not interested in productive conversation, so I move on.
And if people downvotes because they are emotional, this is not the place where I'd like to participate in discussions. I'm interested in the grown up respectful dispute and the extending each other world view.
A place where everyone agrees with each other is boring and a waste of time.