I'm trying to see the charitable way of interpreting this but all I can see is an intent to emotionally wound someone else. there's absolutely nothing in what you just said that can be considered constructive.

the parent was at least trying to make a reasoned point, even if you don't agree with him.

This is Hacker News not Prime Ministers Questions. We're here for intellectual curiosity, some measure of vulnerability and open discussion.

Calling people bigoted or old fashioned isn't swaying anyone, if anything it will push people away because as soon as someone says "they've got a point there" and there's backlash instead of a rebuttal: you've lost another person.