The article states no long term negative effects have been found, compared to positive short term findings. There’s been a wide range of child-rearing practices across cultures and history, including infanticide. Probably no culture has gotten it exactly right, but this practice is not that far outside the norm as other practices from other cultures.
> The article states no long term negative effects have been found
The generations that have been neglected in this way have not reached their later ages en masse. Of course there would be no negative effects. That aside, repressed psychological damage is still damage.
