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.

The last sentence is a genuine question.

The phrase "call out" is already an indication that HN is not being used as intended (https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...). You can make your substantive points without any of this.

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.