> it's because their parents hugged them when they cried as babies, instead of ignoring them, or whatever you're supposed to do to "toughen them up"

Where have I heard that before..

https://www.scientificamerican.com/article/harsh-nazi-parent...

> In "The German Mother and Her First Child", Haarer wrote, “It is best if the child is in his own room, where he can be left alone.” If the child starts to cry, it is best to ignore him: “Whatever you do, do not pick the child up from his bed, carry him around, cradle him, stroke him, hold him on your lap, or even nurse him.”