Given their regular content[*] I would rather imagine complicated gender stuff - but I wouldn’t want to assume anything.
It’s a bit hard for most kids to grasp the concept since they themselves are asexual, from an adult’s perspective. Real life example: I know a couple that have a biological child, but due to the blessing of gender confirmation surgery there are now two fathers. Their offspring still calls one of them “mom” because that’s what they are used to.
[*] like what I would call their springs series