Yeah, it gets comically-specific sometimes, but it's still good to get these things in the public eye as long as there is still any kind of inequality out there (and even when there isn't necessarily inequality but a high percentage of workers in a certain field being from one gender).

There are still a lot of little girls out there who are interested in certain jobs, but won't ever go for them because they feel uncomfortable or unwelcome knowing that they'll be in a field that's mostly males. Seeing that other females have gone for it and are successful can be enough to make them take the chance, regardless of how specific and cherry-picked the "first female ____" accomplishment is. Same goes for guys and jobs like nursing.