Supergirl is the most unapologetically political superhero show on the air, and the original Superman comics and radio series were intensely political back in the late '30s and '40s. So the politics have always been there, and should be there; superhero stories are about fighting for justice, after all. But I don't see what that has to do with the costume change. If anything, we're decades beyond the sexist notion that a woman has to dress like a man to be taken seriously, so changing from a skirt to pants is not a political statement now the way it would've been in the '70s, say.