I was thinking about Pokemon not being classified by sex but their internal gender, and that pokemon are sexless. But then I was thinking how these genders are classified by male and female which are classifications for biological sex, not one’s internal gender, which would be man, woman, or non-binary. It’s probably because the word sex is a bit too PG for an E rating, so they just used gender instead. Though male and female can be used for gender. Would the original Japanese reveal anything?
Oh, that is almost certainly what they really mean; I don’t even think there’s any doubt about that (although I can’t read Japanese, so I’m afraid you’re on your own there). I just think it’s more entertaining to make wild speculations based on their poor word choice.