Well that may be true.
It also mentioned that if the baby was never influenced by it's bad parents, it would grow up without these bad traits?
With that in mind, lets just remember the baby is made up of parts of his parents.
Genetically speaking! the babies genes are sub-units of the DNA and similar to their parents and they may have that one gene that is predisposed to violence and mayhem, so isolating the baby from its evil parents and placing the baby with goody goody two shoes foster parents, may be a wasted exercise.
One day I'm sure this may be a proven fact after they check all the genes to a greater depth and the sub-unites of the sub-units of the DNA we may see a different story in the future.
Which will lead to adopting parents looking for babies without these genetic traits, as some do now with medical problems and education and looks.
Just think you may not be able to get a job without first undergoing a DNA test and have a card to show as proof of passing such a test.
How do you like them apples?