Yes ... that follows a similar logic to "if it's okay to destroy the child growing in utero then why not after birth?". I'm waiting for some lawyer to use that argument to defend some youth who strangled or beat up a screaming newborn.
Very good comparison. Right is right, and wrong is wrong, no matter what the age of the persons involved.
Sex is right between married people who are prepared to be parents. In any other situation, wrong. Trying to split hairs among the versions of "wrong" isn't working.