This nonsense is ancient and tenacious. Its poster girl is Mary, mother of God, and she was a woman so entirely possessed by motherhood, she didn’t even have sex to achieve it. She was impregnated by the holy spirit (1X1, I think) or, if you are not a Christian, by the holy patriarchy, and she is serene, lovely and hopelessly over-sold. She is the virgin heroine we are judged by as we moan and swell like lowing beasts; of actual, screaming childbirth she tells us nothing. She is motherhood shorn of lust and blood. She is spin.
This article makes for some excellent reading.