They still leave a hole in their logic that you can drive a truck through. Many anti-abortion people seem to be okay with allowing exceptions in anti-abortion legislation for cases of rape. If the fetus/child is innocent, how can it matter how it was conceived?
Fwiw, allowing an exception isn't OKing an abortion, though, no more than allowing people to carry guns means you're OK with violence.
They seem to simply be OK with allowing the choice in drastic circumstances, whereas in the case of consentual sex, they're not allowing it.