Secrecy in adoption was always meant to protect the adoptive parents from the original parents after a child was taken in adoption.
These concepts were not true –
Actions once thought natural, such as attempts by adoptees to learn information about their birth families, came to be socially disfavored and considered abnormal.
They were the psychologically unhealthful product of unsuccessful adoptions that had failed to create perfect substitutes for natural families created by childbirth, and they indicated adoptees’ rejection of and ingratitude toward adoptive parents.
Secrecy was viewed as an essential feature of adoptions in which birth and adoptive parents did not know one another.
Here is how hiding an adoptee became the law of the land –
Edna Gladney who was an illegitimate child but later went into the adoption profession and Georgia Tann whose name became associated with a scandal of stealing and selling babies were the prime movers for concealing an adoptees identity by falsifying their birth certificates and allowing adoptive parents to change the name the child was born with. Then, the original records were sealed.
In the 1990s, a renewed media attention on the Memphis Tennessee Children’s Home Society scandal resulted in activists finally breaking open the secrecy contained in Tann’s adoption files for those persons affected (including descendants).
There are still many states who continue to maintain sealed records. In my own efforts to discover who my own original grandparents were, I bumped up against the solid walls in Arizona, California and Virginia.