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There should be legal barriers to putting a human embryo in anything but a human female, and it should be the same for the woman that supplied the egg. There should also be legal barriers to making eggs from XY people and sperm from XX people.
Of course it’s not discrimination to forbid making embryos unethically, where there is no right to. It is a supportable basis to restrict procreation. It wouldn’t be medicine to make a transgender woman pregnant or make her eggs, that’s not healthy. It’d be commerce, and unhealthy. PS: there are no "women" with XY chromosomes (!)