Now, imagine being raised by someone who behaves toward their child as you have described in your article: imagine a child subjected to chronic, moderate to severe contempt by their own parent,
Add in the factor that your parent, who seems to resent and despise you, becomes angry at you easily, screams soul-destroying verbal abuse at you and slaps you around, sometimes hitting you with objects. Imagine a small child being subjected to such heartbreakingly rejecting and terrifying behaviors by the very person on whom he or she is abjectly dependent for approval, attention, and nurturing, plus the very basic survival needs of food and shelter.
That is what its like to be raised by someone with borderline pd (or bpd plus other co-morbid conditions.)
A child subjected to such treatment during their formative years is basically screwed; there's little chance that such a child will emerge into adulthood without some very real, long-term emotional damage, to one degree or another of severity.
An adult who experiences chronic emotional abuse from a partner or a spouse has the power and the ability to just walk away from the abusive relationship: an adult in an adult relationship can leave the room, leave the house, or leave the relationship entirely.
A 4-year-old child has no such option.
My fantasy wish is that there will someday be some kind of screening tool to determine if a person is emotionally stable and healthy enough to be a parent. If an individual falls below a certain minimal "good enough" level of emotional stability (if they are personality disordered, have mood disorders or psychotic disorders) an individual would be closely, frequently monitored to assess their parenting and either receive psychological help with parenting or the child would be removed for the sake of the child's own mental health.
Plus I wish that classes in "Healthy Living" would be required at all grade levels: classes that clearly demonstrate to children and teens the very real difference between healthy and unhealthy (aka abusive) behaviors, relative to both peer relationships and child /adult interactions.