Nah, it’s all part of the euphemism game as played by both sides. What started out as anti-abortion sounded too negative, so pro-life was adopted. Pro-choice was coined to counter pro-life, and so the dance goes on.
It should be ‘pro legalized abortion’ and ‘anti legalized abortion’
Ok, but pro-life is more accurate and honest than pro-choice, which as a label for the left is, of course, a flat out lie.