Not only that, the site is designed to intentionally hide the author obviously because being accountable for an opinion is probably bad for them in this case.
"...being accountable for an opinion is probably bad for them in this case." Same for you as well, it seems.
Your comment does not belong on Hacker News.
That being said, I don't think this site is that harmful. People who'd eat this content up won't read it (tl;dr) and people who do read it will most likely have their own opinion anyway. It's not an authoritative source people tend to trust like, say, Wikipedia, so I'm not bothered about it personally.
The original (now flagkilled) parent comment by that poster contained some information regarding the author's place of residence. I (and others) felt this was well over the line.