Pete,
A couple of things...
First: "Me too" movement?
Second: "Skirt" , by traditional means, implies that the Martian is female. As he is clearly not female, and he is not a Celt (which implies the wearing of a Kilt), what he is wearing, although 'looks' like a skirt, would not be a skirt... Besides, when we watched this as kids, 'is he wearing a skirt?', did not enter our minds. We watched it because it was fun... I found the Martian's voice and lack of facial features funny... and the way he walked...
Actually... He looked more like a Roman soldier... Which fits the perception of Mars, the god of war... Roman soldiers wore a 'skirt' called a 'Pteruges' made of either leather or linen. Enough of the history lessons....
I still watch Bugs Bunny cartoons... So cool...