Sorry. There's a better way that I could have phrased that, but I pretty clearly did not criticize the person or call them names but rather their argument. I know you're a busy guy but maybe could you correct my misunderstanding here?
This is absolutely language that I would use face to face with someone.
It's pretty simple. First, that sentence combined personal language with aggressive language. That crosses into personal attack almost by definition. Second, it adds no information.
The fix is simple too: edit it out. Signal/noise ratio goes up and the comment gets better.
That breaks the site guidelines and you can't do it here, regardless of how wrong someone is. Please read https://news.ycombinator.com/newsguidelines.html.