That's a bit of a perspective-transference there. Formed/unformed isn't under consideration on the pro-life side. Existence/non-existence is probably more accurate. Both are equally deserving of the right to exist. Abortion skews that balance one-way only. Otherwise, there is a bog of parsing which awaits over rights-qualifiers such as independence, formed, survivability, etc. Qualifiers many of which even abortion-rights advocates cannot agree upon. I have encountered many of whom which argue from these positions, but always in varied combinations of pseudo-criteria.