I downvoted because the comment wasn't a response to the article, nor did it really seem to be responding to other comments. I agree that many people make the same complaint you do, claiming that many downvoters are simply disagreeing with content. You might want to consider topicality, too.
I would have posted as a child comment, but I saw a lot of those kinds of things in the discussion even at that early stage. That's why I decided to post top-level.
