The argument against abortion in case of rape has nothing to do with the moral responsibility of the rapist. He will still be punished or not all the same.

Right, but you'll still use the power of the state to make sure the rapist's DNA is in no way gotten rid of by the victim.

Already covered in another reply but abortion for me is a question of when the fetus goes from an "it" to a "person". It is a gradient, but at some point along that process, we have to decide you cannot kill the person for any reason.

My argument is that even if you consider it a 'person', it's OK to believe that a rape victim - who in no way consented to this - is entitled to remove what she did not ask for.

you can gently remove a fetus from a womb and then they simply die from lack of sustenance, that is a different act than cutting them to pieces and vacuuming the body parts from the womb, in terms of morality.

The same way inflicting a painless death is 'less bad' than torturing someone to death.