The point is to further dehumanize the human embryo so that the had-aborts can salve their consciences with the lie that they didn’t kill a baby.
No question that the purpose is to help legitimize abortion. Look, see, that’s not a human being, just a bit of tissue! And it’s medically useful tissue, as well. It could help the lame get up from their wheelchairs and walk again. It’s so mean of the pro-lifers to stand in the way of such miraculous cures!
And so forth.
You can trace the history of such ideas, beliefs, and propaganda from Margaret Sanger to Hitler’s doctors to the modern abortion movement.