That is her right, of course, and nobody should be able to take that away. But when men and women engage in sexual relations both parties recognize the potential for creating life. If both parties willingly participate then shouldn't both have a say in whether to keep a baby that results?
The bottom line is that if we want to make fathers relevant, they need rights, too. If a father is willing to legally commit to raising a child with no help from the mother he should be able to obtain an injunction against the abortion of the fetus he helped create.
Sometimes I wish the level of debate in our elite national publications could exceed, ever so slightly, the level of late night freshman dorm conversations. When he writes "have a say in whether to keep a baby" what he actually means is "decide what a woman does with her uterus." It would be nice if there were some intermediate position, but biology dictates that there just isn't. Either you have the baby or you don't. Someone has the right to make that decision for themselves or they don't. And, of course, he eventually makes that clear. He doesn't mean "have a say." He means "decide."
I suggest all sensible women "decide" to not let their vaginas get within 20 miles of this guy. He thinks he has the right to decide, once he voluntary donates his sperm to you, that you must carry the child to term.