It would have been prudent to just officially change from “gender” based classifications to chromosomal classifications. Easier legal arguments and everyone knows what xx vs xy really means.
I agree that it is not a good idea to have athletes taking drugs they don’t need for life, so I don’t like the hormonal therapy option. Plus even with therapy many of the ancillary advantages of having male Chromosomes beyond testosterone still exist.
That said I think if CAS rules against the IAAF they should just ignore the ruling, basically telling CAS that they don’t understand the sport and therefore are inadequate to adjudicate a proper decision. Because seriously if CAS doesn’t understand that greater height, lower fat, better blood, more muscle, better running hips, no pregnancy and no cyclical blood loss creates an advantage, there is no use even arguing. The decision is political, and the politicians are more than willing to destroy women’s mid-distance running in the name of there agenda. I mean look at the joke that Connecticut HS Track right now.