Different sources give different assessments of the risks for the mother. For example, the English-language Wikipedia reports a probability of 1 to 44 for the age of a woman at 50. Plus, the influence of father’s age on the likelihood of having a child with Down syndrome is now being analyzed and seems to be there too.
In addition, there is such a thing as prenatal screening - you can determine the pathology in advance and yes, interrupt such a pregnancy.
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So it is, no one is arguing about screening, just abortions do not affect the female body in the best way. And by the age of 30+ it is already becoming difficult, even just to endure. Ask any pregnant woman who has had problems in the process)))
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Birth affects the female body even worse (unfortunately, the risk of death and complications during childbirth is higher than in the case of abortion in a medical institution), but women go to these victims. Plus, usually women 30+ have a better financial position and, accordingly, they can better organize their lives.
So the only question is that a woman should get truthful information about the risks and benefits of possible solutions.