Maker of the video here. For a moment, I though this was about my video and article, but reading the comments, it's more about everyone sharing their stories. Few of the comments reflect having read the article. Fair enough, sometimes it just takes a link to give theme for a discussion.
But one thing I've noticed about HN comments is that they are almost always _tangential_ to the content being linked rather than directly about the content itself. I saw this happen the one or two times my own blogging hit the front page. I suspect a large percentage of users simply head straight to the comments section to tell their own story. (Or, unfortunately, to find something to argue with someone else about.)