From what I can understand about the Spyro remaster based solely on a gifset I happened to see going around, Spyro exists to cater to male-attracted scalies. I'm not even a scalie and I'm gay for at least two of the dragons in question.

(Maybe dragons in Spyro are like Discworld dwarves, and all of them are male by tradition but some of them happen to be what we ourselves would think of as female? Perhaps they're hermaphroditic? Or some of the dragons are trans? Or that thing you said, or possibly just good old sexism at play once more.)