The author of the article makes the point that it wasn’t religion but science and reason that showed the children (in the satire) that a baby is human. I don’t know why religion is discounted as an explanation for anything these days, like for why abortion and homosexuality is wrong.
If there is no God, then an aborted baby is just a piece of meat. “Science and reason” may tell us the baby is human, but so what? Without God, that life has no value beyond what other humans assign it. It’s Christ who teaches us that ALL human lives are valuable — none worth less than the others.
Science and reason is a human way of trying to start to understand God's plans and designs. If that's the way to convince people to not abort, that's the way.