The issue is that there is just as much chance that these two male athletes have one of the medical conditions that allow these male athletes to compete with this physical advantage, ie. a Difference of Sex Development, as they have of being transgender. That information has not been released, and to be fair, it should not be.
Either way, these are male athletes. Of course, female athletes fighting female athletes is fair. Because female athletes all have comparable advantages within the female sex category range. That is how competition at this level operates.
And by 'female athlete', I mean those athletes with bodies formed around the production of large gametes, ova, regardless of whether that body produces those gametes now, in the past or in the future. To be clear further, that requires ovaries not testes, regardless of whether those testes are visible outside the body or not.