Oh, I don't disagree that there's lots of left-wing and progressive people here too, just as on any tech site. But there's a ton of extreme libertarians and alt-right people too; maybe not a majority among the users, but still a very significant presence, and exercising downvotes.
Maybe the downvotes are because of the fairly aggressive political stance? I happen to agree with you, though I felt the tone and substance of the original post was not all that helpful; I probably would have downvoted it too, if it were not already at the bottom, and if additional content hadn't been added that is making it feel like a more worthwhile discussion.
Often people do downvote that with which they disagree, but that's not the intended purpose of the vote; keep that in mind when reading your own 'score'; it may not be the opinion but the content or tone that people are rejecting.
