I'm talking about what should be the case, i.e. what is a moral right or duty. Legal concerns just add extra complication that are tangential to my claims.
I am not talking about what the law is, but rather what fairness requires the law to be. Fairness doesn’t necessarily require giving one sex more legal rights (allowing men to disavow parental obligations) to make up for a biological limitation (inability to terminate a pregnancy).
I just don't know how to respond meaningfully when you mix moral and legal concerns. Regarding fairness, I don't see disavowing parental obligation as more legal rights. Women can give their child up for adoption after all.