I am in the same boat as you. While it is very normal for parents to be defensive, I found the comment a bit unnecessarily aggressive without an immenent threat (heck, we're on some comment section on the internet here, not a dome in hunger games battling for survival).

But then again, I have not had children of my own, so I can't relate to the need to defend my offspring.

And from friends I know that parenting is really hard with lots of sleepless nights. Perhaps the parent commenter just had a bad day.

It seems we indeed do not share morals. I thought I was merely offering a humane/plausible excuse.

Perhaps it's just your laconic phrasing, but I can not stop reading your replies in Arnold Schwarzenegger's voice. Maybe I would see them in a different light if I read them with Wall-E's voice.

Best of luck to your child.