Sometimes people create and freeze embryos. Often these people are married. Sometimes they divorce after the creation but without bringing them to term. Then sometimes one partner wants to bring them to term and the other wants them destroyed. Courts get involved.
The arguments made for leaning towards the one favoring keeping them alive invoke the personhood of the embryo. This strikes me as rather odd given, as a general rule, you’re not allowed to freeze people indefinitely against their will. If you really believe it’s a person, you don’t freeze it and then decide later if and when to let it resume living. So, this argument strikes me as a dishonest, ad hoc rationalization for one’s right to force another into parenthood.
(Another prominent argument is that by going forth with the plan to create the frozen embryos, one has already consented to becoming a parent. I simply ask where that came from. Freezing the embryos seems like a pretty clear decision to not be a parent (or parent to another child) at the moment but to instead postpone the decision.)