[As others have pointed out, it's the 4th article in a series so they are not "starting out" with stereotypical questions]
Even before I read this, I expected the comment section to be full of comments being like "why can't it be ask an engineer" or "why are they asking questions about kids, men have kids too". I've noticed a pattern where if there's any social issue on hacker news that is politically polarized (i.e. women's issues in tech, BLM, diversity in hiring, etc.) you can expect a a huge wave of comments that criticize the article from authors who don't actually read it.
The funny thing is that when you get into social issues that are not that polarizing (i.e. living wages, ethical issues of AI, privacy) the community tends to have a much more intelligent, civil discussion.