Adoptive parents could have a sizable effect on this, probably. But even then, their kids could eventually think for themselves.
How do you think that numerous Westerners grew out of their traditional Christian faith, for instance?
Are you sure about that?
Also, here's a funny article from a while back:
https://www.foxnews.com/world/muslim-clerics-warning-cucumbers-too-sexy-for-women
It shouldn't matter too much since the effect of adoptive parents on children are rather limited. Biological parents are much more important. Except when it comes to money. There, adoptive parents could have a real effect if they're much wealthier than the biological parents are. But not in...