Hey curious about downvote (honestly, want to know why). I didn't see anything saying that was a bad idea in the HN guidelines:

https://news.ycombinator.com/newsguidelines.html

I felt the typo was one where I had to do a double-take and make sure it wasn't some purposeful acronym. So, I posted a quick note since it looked like the HN poster also was the article writer, and my comment would drift to the bottom quickly and wouldn't get too far in the way of a larger discussion.

I could see maybe I should have made my comment more verbose so someone wouldn't interpret it as being short or something? Or is there an unwritten rule about not making quick editorial comments?