No, it wasn't.
But you accidentally made a great point.
Just because they thought the world was flat doesn't mean it actually was. Just because people think abortion isn't murder, doesn't mean it isn't.
Science progressed and we learned the earth is round. Science has progressed quite a bit since roe v wade. Ultrasounds weren't even commonplace when the right to kill your baby was magically found in the margins of the Constitution. We know much more about fetal development now, and the point of viability is much earlier.
History will judge abortion proponents as ignorant barbarians.