Whenever I think about Metroid, I'm reminded that the nes Manual glazes samus for single handed heroic feats the whole army and all other bounty hunters couldn't accomplish.
It also call "him" a fully cybernetic machine with super powers. Irl we know this was just building up to the "Samus is a girl" twist. In universe however, I like to think it's propaganda to help the men of the army and bounty hunting save face.
Imagine how humiliating it must be for those boys to know a mostly human and fully organic woman is a better savior than them all combined?