I don't know how you're arriving at that speculation. (Bear with me here, I may have misunderstood you.) Are you saying this because they condemn abortion but not nonmarital sex? I think the FReepers to whom you refer, would condemn nonmarital sex as well.
How many men are condemned for the abortion of their prenatal sons and daughters? Not many. Yet there are as many men involved in this, as women --- simply because they have sired children under circumstances that expose them to high risk, and then through weakness or indifference --- if not emotional pressure or worse --- consented to their deaths.
I’m saying that it seems to me as if some want abortion to be unforgivable, because it’s commonly a result of immoral sex. Abortion blows the illusion of sex as a consequence-free recreational activity that has no more moral content than a game of tennis. (So does birth.)
On the other hand, it’s possible that it’s simply animus towards Pope Francis.
I might be totally wrong about everything, though.