Who are you to tell men that they can’t have a say?
I’m all for killing foetuses. I’d even decriminalise infanticide. Pregnant women are the hosts of their miniature human parasites, and I couldn’t care less whether they let them grow until birth or abort them (even after birth).
But most arguments against abortion have little to no regard for the autonomy of the mother. The arguments they use are about the supposed sacredness of a few clumps of cells or some unthinking proto-infant with no self-awareness, in which case it matters not whether the anti-abortion proponent is male or not.
Plenty of women, including childless women, oppose abortion. Their arguments don’t suddenly have greater merit or credibility just because they’re women. The justifications and rationalisations can be just as silly as any man’s. They don’t give a damn about the autonomy or agency of any mother contemplating an abortion and are no better or worse than male anti-abortionists in this regard.
What I’m trying to say is is that your objection seems to have an element of projection. You’re arguing as if everyone shares or should share your regard for the decision making power of the mother. But for anti-abortionists, the foetus is sacred, and the mother’s decision making is subordinate to it—a mere vessel with a duty of care for the “sacred” thing she hosts.