...But Samus is a human, sure, she got Chozo DNA, and later on, Metroid DNA into her, but while she is quit cold, she is still a person like you and me, so I don't see why she would care mrore about her gender & appareances, when the thing she deal for her "job" are 95% dangerous aliens that will kill her no matter what she look, heck, a good bunch of them aren't even sentient enough to care about that! And the few that are sentient enough don't care about Samus gender, they care about the missions she accomplished and the legends about her, I don't see why she be ashame when almost everyone hold her in high regard. (Well, beside Other M Adam, but we don't talk abotu that one)
Brief, this headcanon doesn't make much sense to me, and seem to only made because you can't understand why a human need enough protection to deal with space dragon inside veeeeeeeeeery hot cavern with lava and even acid at time.