I just had this thought:The doctor can not force the patient to abort, only recommend. I'm not saying the doctor is free and clear, but the mother is ultimately to blame.
It's like trying to blame the cable guy for you watching porn because he was the enabler.
Mom: ok
8 babies: ok (for now)
Fertility Doctor: success
It is not his job to feed and clothe the kids, just stick em and bring em to term. I think he did his job successfully.