Ok, my final thoughts: why are people complaining about women in a fictional world? This is the game (franchise) where Celtic people, French-German like kingdoms, sultanates and random nomads coexist directly next to each other and the biggest concern is women?
The Mount & Blade series were never about "historical accuracy": it's a game set in a fictional world the creator dreamed up one day with only a little inspiration by the real world. So what if the devs want a an equal amount of women and men lords? Warband takes place around 200 years after Bannerlord and a lot could have changed since then in the lore. Maybe women were more accepted as leaders during Bannerlord's time and only became marginalized later?
There is literally no "real" medieval history in this game, it's all made up: for all we know, a civilization of mole people might have existed during any point of the lore. Trying to justify your (conservative) mindset in a fictional video game world is just sad. There are hundreds of other games based on actual history you could complain about.
One more thing: Warband was originally a very different game with only a tiny percent of real world inspiration. It had undead, undead Harlaus, necromancers(!), mysterious bandits, ghouls, only two factions, no villages, only towns and a completely different map. It was called
Warrider. Maybe it would have been some kind of weird post-apocalyptic madness where most of the population gets wiped out and only the big centers remain or just your standard fantasy fare? The whole game had just very weird vibes, might be because of the unfinished nature of course, but I think there is more to that.