Comment by samatman

Everything this is based on is subject to absolutely massive genetic confounds.

How you're raised is who your parents are, except for when it isn't.

Which is why we have adoption studies. Which strongly indicate that it's who your parents are, not how you're raised, which is more determinative of outcomes. Is it a mixture of factor? Yes, but the dominant component is clear. A study like this focuses on the minor component and presumes that it's causal. That is unlikely to be the case.