The other factor is that ANYONE can abandon a child. Most laws word it as "any responsible adult" this loophole allows abusive dads to forfeit a birthmother's child without her consent, as well a bullying grandmother, or even an unrelated kidnapper.
It doesn't matter if anyone has exercised a loophole, for the loophole to be a problem.
Ray
PS -check out a letter to the editor I wrote in Kentucky:
http://www.snitch.com/000432.html