@Nils I am an autistic programmer and cannot relate to normal human emotions very well, so I could just be very wrong, but I think PPD is just women needing support and vitamins and peptides and extra hormones
fix the mechanical and chemical problems and the crazy should go away (women lose enormous amounts of hormone production after birth and are drained of all kinds of vital proteins and minerals)
help with the worst and most exhausting period of child rearing would help with the stress and provide a backstop if the woman's mind goes off the rails
and women should not be learning about crazy women who did bad things as they have fragile minds - it is like how they should be banned from consuming true crime nonsense