Users flagged your sibling comment, no doubt because it was unsubstantive and arguably flamebait. That's against several of the site guidelines; this one, for example:
"Comments should get more thoughtful and substantive, not less, as a topic gets more divisive."
"Comments should get more thoughtful and substantive, not less, as a topic gets more divisive."
https://news.ycombinator.com/newsguidelines.html