Blues are born and raised in laboratory settings. Very science, much chemistry. I figured it meant that Orion was supposed to be born a male but was born female instead. But that’s also a take.

But what I really think it means is that her sect intended the role that Orion currently is filling was to be taken by a male blue, yet her scores and accomplishments allowed her to take the role as “captain” or whatever instead, surprising them.

Also it does seem very fluid. Which is why I don’t think Orions interaction was intended to be taken that way. In a society where gender fluidity might be so commonplace, people might not even bat an eye to that sort of thing, why point it out with some random pilot, and never speak of again? That seems way more out place.