Big node fan, hadn't seen this either. Side note, not criticising parent comment specifically, just thinking out loud: I still don't get why people question relevancy of submissions on sites like HN. Surely if its getting upvoted enough to hit the front page, the community finds value in it, right?
Not useful or common knowledge to you doesn't mean it's not useful or new for others. If you knew about it, and dislike it, what are you doing commenting here? If I had the same opinion I would have shrugged and told myself "Oh... grunt... again... Move along", not come in here to make a completely useless remark, which by the way obviously does not align with what the majority here thinks.
I'm pretty sure it's common knowledge, I'm one of those annoying node haters and I've known about it for months now.