Care to explain how? I understand the original comment didn't really add any other information but surely the differences in nature and nurture account for something, when considering Adoption Studies are a thing. [1] Perusing the results of a quick search bring up loads and loads of differences between adopted and non-adopted children, across many different metrics. I'm sure the "parenting community as a whole" doesn't exclude adoptive parents. Almost all of these studies show differences, such as with social skills or behavioral problems [2], and with these differences might the parent have to adapt? There are many things that come into an adopted child's mind about their own adoption too, and challenges specific to adoption [3]. Is this particular information relevant?

[1] https://en.m.wikipedia.org/wiki/Adoption_study

[2] https://www.theatlantic.com/health/archive/2015/10/the-adopt...

[3] https://www.childwelfare.gov/pubpdfs/f_adimpact.pdf