All the fighting, adventuring, acquisition of valuables, pretty much EVERYTHING is done by the guys. Is this seriously the world of the p-whipped? Leadership positions in such worlds like these are related to the above mentioned activities, or hereditary titles, but it seems backwards.
It makes sense in Rise of the Shield Hero, given that the queen is an ungodly powerful mage, with the princesses being just as skilled in the craft, albeit less experienced.