Reivilo
In a world of literally billions of families, you wish to change society on the basis of 70 flawed studies that admitted to convenience sampling and excluding outlier findings that didn't meet their desired outcomes.
On the strength of this 'science' you could equally prove that children are not disadvantaged by being raised by a pack of wolves, due to their ability to work in a group environment and their desire to live on a low carbon diet of raw meat.