"Playing devils advocate does it not just reduce “mothers” to incubators"
You know, it is kind of cute when you see such sexist nonsense, and can trace it back to (at least), the ancient greeks............
To be specific, the trial of Orestes, who 'executed' his mother Clytemnestra for killing his father Agamemnon (who had buggered off to the Trojan wars with his mate Odysseus and a load of geezers in ships, claiming they were rescuing Helen, but actually just roister-doistering and enjoying themselves drinking, fighting and wenching for far too many years!). Where, I believe, Apollo claims that the father is the one true parent (mother just incubator and/or provides base matter with the far more important sperm providing the magic spark that makes a proper human (read male)), and Athena then votes for not guilty. But then she was born from the head of Zeus, so has a screwed-up view of parenthood herself.
But over and over again, it's the same inability of the male to cope with the fact that he can't do it all alone, that even the sacred male comes from the messy, bloody, birth-canal of a female. So, he either tries to deny her significance, or become her by his own actions and force of will. It really is the same ancient theme repeated again and again. The rib of Adam, the head of Zeus, the desperate wish that males could remove the female................