Yes, we know. That’s why it’s funny. But it still makes the point.

But have you ever seen them make a “zero-suit” version of a male armoured guy?
Don’t recall Master Chef or the Doom Marine running around in their skintight underlayers.

Additionally, Samus debuted in a game with no characterisation, and iirc, you only found out she wasn’t a man when she stripped down at the end of the game if you did well.