Japan does have a rapidly declining population because of the extremely low fertility rates and the increasrd aging putting its workforce into welfare reliance. I suppose desperate times call for desperate measures?
If this article is an acceptable form of desperate measures, I think an equivalent would be Exxon deciding there are too many rich black people, and thus paying black engineers less. (private organization using unfounded information to take an action that doesn't make any sense outside the generally accepted social contract)
The US is deeply imperfect -- but no one will tell you that having had a child you can never, ever go back to your profession.