My argument is that predisposition (AKA nature) is only one aspect of identity, and that nurture plays a very important role. The nurture side (regardless of what direction you nurture in) has strong connections to cultural power structures that are loosely connected to nature, but far more connected to history.

Survival in society requires a lot of adaptation to cultural power structures and symbols, and that can rationally mean nurturing a child in the direction that might run against their natural disposition. Another example less encumbered by the topic of gender: a parent might rationally make a non-athletically predisposed child play sports because the child can learn useful teamwork skills through their participation.