Busting Myths about Mythbusting

Last week, this article from Adoptive Families Magazine showed up in my email inbox. It suggests that the media perpetuate these four myths about adoption: 1) Adopted Children are Troublemakers, 2) All Adoptees Have Traumatic Birth Histories, 3) All Adoptees Search, and 4), Adopted Children Are Obtained Illegally.

I take the subtext of this list to be "Things That Dissuade People from Adopting," since from what I have read, Adoptive Families is extremely concerned with making everyone's experience with adoption seem very positive, and they want people to adopt. If this is indeed the subtext, I am kind of appalled by #3, All Adoptees Search.

Does the fact that some adoptees search for their biological origins dissuade people from adopting? If so, why? I understand that the prospect of an adoptee searching may threaten the adoptive parents' sense of parenthood, but shouldn't Adoptive Families, as an advocate for, well, adoptive families, which I assume includes adopted people as well as those who adopt them, support adopted peoples' interest in searching? And, come to think of it, shouldn't they disabuse adoptive parents of the notion that their parenthood is in question if their adopted child searches?

What is going on here? Please read the article (hyperlinked above) and let me know what you think.
Thanks.