I can make a guess. This guy took the practice of abortion to a level that no one had ever imagined. Also, most people didn’t know what partial birth abortion was until recently.
You are probably right
The sad truth is many people know exactly what an abortion is. They don't care. This is about eugenics, although they will not admit it. They don't fight for the "right to choose" because they believe in "freedom of choice." They want abortion legal because they believe it reduces the number of inferior people producing more inferior people.
People like Bill and Melinda Gates, and many others, are involved in a eugenics movement. However, they cannot call it eugenics. The goals haven't changed since Margaret Sanger; they sell it differently.