The trouble is that abortion is a philosophical issue and the Supreme Court is not made of philosophers–hence the naive comments from some of the Justices. It’s like asking them to make a ruling based on a standard philosophical problem, say free will or the mind-body problem. Do you think they even consulted philosophers on the question? We are probably going to get abortion banned based on shoddy philosophical reasoning. Not that the usual reasoning on the pro-abortion side is much better.