Earlier quoted context omitted.
Yes, totally this. Moreover, I'd like to add anonymously down-voting / reporting someone's opinion just because it's not yours is just as mean-spirited as calling someone names. Every internet message board has its own culture with its own take on what's "right" and what's "wrong", and on HN (and reddit) the institutionally accepted way of being mean is misusing the downvoting / flagkilling system to attempt to bleep…
"Yes, totally this. Moreover, I'd like to add anonymously down-voting / reporting someone's opinion just because it's not yours is just as mean-spirited as calling someone names." I've stopped up/down voting all together for similar reasons.
For example, upvoting when a subject matter expert gives some context, or the person offers a comment that you found interesting. Conversely downvoting when there is a "me too"/contentless comment.
Personally I most commonly find myself downvoting what I would describe as either rhetoric or offensive.