Wait, if someone has 4 children, it's because of religion? That's possibly the stupidest comment I've ever seen on HN, and I've seen a lot.
(Or some combination.)
You don't write a post to call them idiots, even if they are.
Most relevant:
https://news.ycombinator.com/item?id=9658134
> Responding to nastiness with more nastiness is the surest way to destroy HN. The way to help is to gently point out that we all need to follow the site guidelines.
But there are very many others.