Why do adopted children have parenting needs (if adopted from birth as I suggested) that surrogate babies don’t?
The data we have so far on children born through surrogacy is that they turn out pretty much the same as other child born to families of the same kind of socio economic background, and that their outcomes are not in any way similar to those of adopted children.
I'd have thought the reason for this would be fairly obvious. Children adopted at birth are nearly always adopted because the parents have some serious issues. There may well have been substance abuse or alcohol damage in utero, but even if there is not, the genetic background of such children is far more difficult than the average person. You don't have your newborn taken away by social services unless you and your partner have a track record of some quite serious problems, which can include very low IQ, addiction issues, personality disorders, serious issues with impulse control/criminality, etc etc. Children who have genetic parents with such issues are massively more likely to have issues of their own as they grow up. I should not need to explain that these things are generally not the case with surrogate mothers and the parents who hire them.
I'm actually against commercial surrogacy for other reasons, but we are really really not seeing any evidence that it causes trauma or primal wounds or any such stuff. The kids born this way seem to be turning out perfectly well adjusted.