Bad idea to ban trait-selected abortion, IMO; but I would just allow it as some people would just do abortion on their own anyway.
This issue can’t just be boiled down to ableism; it is a large reason for the potential abortions. Ableism is a symptom of capitalism. However, some people don’t have the resources to take care of a(n) (autistic) child; some persons got raped and they got pregnant. Is it “ableist” to abort an autistic child then?
My opinion is that:
(1) Abortion should be legal without needing to provide a specific reason.
(2) One should be allowed to perform any type of screening available that would allow them to predict the likelihood of their unborn child having a particular trait.
If both of these conditions are met, then trait-selection abortion is legal by default, because a person can screen the unborn child and then choose to get an abortion without specifying the reason.
From a moral standpoint, I think that it is fine. In some cases I might think that abortion is a reasonable choice. In other cases I might think that the person is being quite shallow if the trait is something like eye color. But I think that it is up to them either way. I don’t feel strongly about protecting a fetus if the parent doesn’t want to have the child for any reason .