Let's say it was useless. Responding with a content-free and condescending comment did nothing to further the conversation. You're using more space on the page to say nothing and dragging down the tone of the conversation.
It provides OP, and others, with information as to why it was useless to help prevent future useless comments, improving the overall comment quality of Hacker News. Albeit, my method was crass.
The question wasn't just a request for raw data. It was also an expression of frustration and an invitation to debate.