OK, I will admit my language defense was a little off. I was trying not to step out of the box on this one.
Stepping outside of the show, I know the he/she pronoun issue had been heating up at the time this show was written, but I believe the use of masculine forms as neuter or when gender was unknown/uncertain was still widely accepted without much thought. That may say something about bias in our own culture, but it seems unfair to penalize an author for slipping into a common usage of his own time. Especially since the author was dealing with a scenario in which the story was one where an author these days could be excused for forgetting to give Meegat gender neutral language (temporarily disregarding arguments about other gender issues).
As for the Aztecs, it wasn't stupidity that made them mistake Cortez for a god. It was a very detailed tradition that Cortez happened to fit with freaky perfection. The Hawaii incident is less clear. They may or may not have thought Cook was a god. In both cases, the groups seem to have caught on rather fast (though not fast enough in the Aztecs case [still, they may already have been doomed. I understand something like a third of them died from smallpox carried by ONE of Cortez' men (although I'd have to look that up again to be certain). Civilizations don't just bounce back from things like that, especially when expansionist hostiles have entered the territory]).