Yeah I see this a lot on HN. I think people feel the need to make precise and accurate statements about things. I think a lot of them, if they'd deep breath and waited 30 minutes, they wouldn't comment.

The internet is filled with pedantics, creeps and dogs posing as cats. The whole "take a breath" thing was early abandoned in favor of the now traditional "reply until the other party gives up" approach, which requires you to really dig into their messages and point out spelling mistakes, fallacies, and for programmers, variable names.