“Certainly one can embrace the antiabortion position without it being the number one dogma.”
Not according to the heretic Martino.
“What is wrong with antiabortionist being dogma?”
No ecumenical council has declared it thus. Dogma isn’t something which is just “made up”. It has to be infallibly declared and in the face of some heresy being taught within The Church. The only heresy being taught in The Church related to abortion is that of Martino.
Is abortion wrong?
"Therefore, by the authority which Christ conferred upon Peter and his Successors, in communion with the Bishops-who on various occasions have condemned abortion and who in the aforementioned consultation, albeit dispersed throughout the world, have shown unanimous agreement concerning this doctrine-I declare that direct abortion, that is, abortion willed as an end or as a means, always constitutes a grave moral disorder, since it is the deliberate killing of an innocent human being. This doctrine is based upon the natural law and upon the written Word of God, is transmitted by the Church's Tradition and taught by the ordinary and universal Magisterium." "No circumstance, no purpose, no law whatsoever can ever make licit an act which is intrinsically illicit, since it is contrary to the Law of God which is written in every human heart, knowable by reason itself, and proclaimed by the Church."
-Pope John Paul II, Encyclical, Evangelium Vitae, #62.