“But why is the doctor being punished then? He should be ignorant too of what he is doing, and, therefore, blameless.”
Nah. You cannot graduate with a medical degree without being informed about the act of conception, when human life begins, etc.
Ordinary folks might be able to plead ignorance on those topics, but not doctors.
What the, are you serious? People don't know that sex produces babies that develop brains, little beating hearts, and are then born?