Strong disagree here... While there are definitely those that will bury some opinions with downvotes, there are others that will upvote. Conservative, Libertarian, Progressive, Liberal and even outright Communist views get expressed in varying comments and that's just political leanings.

I only really recognize this because I'll be actively reading/replying sometimes and see comments go +/- 2-3 up or down votes back and forth on the same comment. While you may be at say -2, that's just the aggregate. I sometimes wish I could see the total up/down votes just out of curiosity.