The top comment is asking why girl's perform better, and yet and under-represented in top tier jobs. The comment you replied to responds that they think it's because of having child and choosing not to go back to work.
At no point are they taking a stance on whether or not raising a child is as important as working a job...
That means most men won't do it, because they'll lose status. Meanwhile women will always place lower importance on status than on childcare, and so they will do childcare because no one is available to do it for them.
The disparity won't ever disappear until it's just as valid and socially supported for a man to stay home and raise children, as for a woman.
I don't know that is true of most men. Have children? Sure. Raise them? Not so sure. I once read that men wanting to have more children is inversely proportional to the amount of work the mother expects them to contribute.
Women tend to be more nurturing so their role is disproportionately more important during a child's earlier formative years. They also tend to have a stronger orientation toward domestic affairs. Men, on the other hand, tend to be more strongly oriented toward the public sphere. The home is the focal point. Thus women are at the center of the action, as it were, when it comes to the amount of time they spend with children, while men tend to be more strongly motivated to take care of affairs for the sake of their families outside of the home. The home is also associated with greater safety and comfort, which is something women tend to prefer (we also see this reflected in occupational preferences), while the public sphere contains more risk and discomfort, something men prefer to face esp. when the reward is sufficiently high (this is also reflected in occupational preferences; men tend to prefer taking on more dangerous and higher stress jobs and longer hours in exchange for more pay).
I have used the word "tend" for a reason. These are not two sealed off magisteria. Proportion is probably good way to frame things, though to a point. So men also participate in child rearing, esp. where discipline is concerned (the complement of maternal nurturing is the need for paternal authority which serves the child later in other ways like the ability to relate to authority elsewhere in a healthy way). Women also operate in the public sphere and often also work. Conditions and circumstances can also constrain how male and female roles are expressed.
Which is exactly why many women drop out of the work force to do this important work, and many men would, too, if it was more socially acceptable for them?
And sure, people do that all the time. People do all sorts of things. It doesn't mean they are communicating effectively, getting any kind of point across or coming to any conclusion at all.
I could start into semantics too, for example saying that people don't bring up tangential points because tangents aren't points they are lines. It wouldn't be a good idea, because it wouldn't further the discussion at all. That's basically what I see happened here.
You produce a small version of yourself and you are emotionally satisfied that something you did will mean something in the end. If you get to raise the child yourself then you get to perpetuate your mental life as well.
Still selfish reasons, but at least much better than producing... laborers.
Most everyone loves their mom more than anything else.
Baby raising is quite important work. I would argue that raising the next generation of workers, taxpayer, customers and pension fund contributors is the most important work of all.