Hey, we might be getting somewhere here.
"English, please." Birth bond is very important. Without it, children and adults are at a huge disadvantage and have mental challenges associated with abandonment and trust.
Birth bonds are not something that a surrogate parent can not replace.
There are exceptions, but this is pretty much the rule.
As for your question, I think you cover just about every case that I think is destructive to the birth bond.
As for Sources, I recommend that you look in to Nancy Verrier to start with.
"Many doctors and psychologists now understand that bonding doesn't begin at birth, but is a continuum of physiological, psychological, and spiritual events which begin in utero and continue throughout the postnatal bonding period. When this natural evolution is interrupted by a postnatal separation from the biological mother, the resultant experience of abandonment and loss is indelibly imprinted upon the unconscious minds of these children, causing that which I call the primal wound'." So writes Nancy Verrier in her book, The Primal Wound: Understanding the Adopted Child (1993).
Birth Psychology -What Is The Primal Wound?
Even though I do not always agree with Betty Jean Lifton and have had a direct relationship with her on an issue, she offers some interesting first hand views on adoption. Read Twice Born, Lost and Found and Journey of the Adopted Self is a good starting point.
If you need something for a more simple mind, read or watch Mommy Dearest, Secret and Lies and Ordinary People.
I turn your question back on you. Tell me what your position is on what you ask and why you think it with supporting writings from experts in the field.
I promise I will not name call if I disagree and will listen with an open mind. Your questions are very on topic for this thread.