This is a very difficult question, given the massive emotional impact of conception and children.
I am very lucky, my wife and I have three healthy daughters, and because my wife giave birth to our oldest at nineteen, we were grandparents before we were forty - which is younger than the age that some of these women will be giving birth if this treatment goes ahead.
I have always believed that babies are a gift, and not a right, and if nature decrees that a woman does not conceive, there may be inbuilt biological reasons, and the circumvention of those may be harmful.
But that's easy for me to say - I am a man, and have not been denied children, and I am unable to empathise with a woman who is unable to conceive, so i hae to approach the question from a position of ignorance.
That of course does not preclude an opinion. If, as AOG suggests, the treatment age range is being rasied to head off ageism accusations, then this cannot be right - each case must be judged on its merits by the medical staff qualified to make those decisions.
It is, as I said, a very difficult moral, ethical and medical issue, but I don;t think that any woman should be allowed to proceed on the basis that a baby is her moral or legal right - I believe that to be morally indfensible.