Can you please edit out swipes from your HN comments, regardless of how wrong someone is or you feel they are? This is in the site guidelines: https://news.ycombinator.com/newsguidelines.html.
Your comment would be fine without the first and last sentences.
I dunno, there's a definite tendency to say extreme and trivially falsifiable things on HN as if they were fact. I think those should be called out because they really derail rational discussion and encourage "us vs them" narratives.
He is clearly exaggerating for effect so much that it doesn't make sense any more, and IMO that is what leads to unproductive debate. It should be called out as such.
If you feel that someone else is posting incorrect information, it's sufficient to post correct information. Getting aggressive about it is unnecessary and damages the commons.
Your comment would be fine without the first and last sentences.