The amount of outrage generated over a very common turn of phrase honestly smacks of a disinformation campaign. I guess privacy matters are 'passé' on HN now.
Just because it's a common turn of phrase doesn't mean we should be less outraged. In fact, we should be more outraged, because it's more likely that it's actively harming people. Ideas -- in this case, stereotypes -- are very powerful and have real effects. Language is important in creating expectations, and people are given opportunities based on expectations.
Also, it's not a common turn of phrase in my world because I don't spend time with assholes stuck in 1950.
Insulting anonymous people based on their behavior (and using curse words) isn't harming anyone, especially because they're anonymous.
Perpetuating stereotypes does harm people, because it degrades people based on the way that they were born (or, in this case, also based on the fact that they decided to have a child).
No one is on the verge of electing Trump, by the way. More than 70% of women dislike him. More than 60% of the country actively dislikes him[1].