No, it's not Parenting Magazine. It's also not bodegajed Magazine.
Like many have said before—to others who stress a dislike over an article that made it to HN's front page—if you don't like an article then flag it, ignore it, and/or don't click on it and comment. Move on.
I'm not a parent, but as soon as I saw this article in my feed reader I came to HN to see what other hackers had to say about parenting. I am not disappointed.
There are people who want to have startups, deal with technology, AND be parents, too. There's no reason that they must be mutually exclusive. Besides, the number of articles regarding parenting on this site is a metaphorical drop in the ocean of tech articles.
I think it's wholly appropriate : To put up a warning flag around some of the major non-tech life events that the site's main demographic will be making decisions about.