Keep in mind that masculinity and femininity are constructed - they only exist because some properties associated with each other. Because of its construction, its an opinion, not a fact. What one considers masculine or feminine is basically arbitrary and random and everyone is free to disagree. An evil spirit could claim that none of the mentioned archetypes is gender-specific at all and they would not be provable w…
How could it be a construct of our modern times if their themes are consistent throughout history of humankind? Delving into mythology and legends which explore the nature of our kind, the description of male and female is fairly consistent. You might as well say "everything is subjective, there is no truth".
OP didn’t talk about "our modern times".