The problem is our tendency to identify with a gender:

Who cares what gender it is or whether it is solid or fluid, etc. - these are just traits of the body we happen to have, having nothing to do with us, the owners of our bodies.

So sad to see so many people waste their life on such petty issues, so sad to see that schools encourage young people to dwell on all this insignificant nonsense (including both schools that teach the solid version and schools that teach the fluid version): obtaining a human body is a rare event, it is practically the only type of body that allows us to reach God and the gender(s) of that body was never a barrier - both males and females, eunuchs and whatever in between, were able to transcend those primitive genetic urges and utilise their human body to become sages, seers and prophets, fulfilling what life is really all about.

Teach the youth about God and stop wasting their precious time on earth by filling their heads with gender-role rubbish of any kind!