There's an option that determines whether or not female officers show up. Its oddest option I've ever seen.
"Would you like to deny the existence of females in power, for your
power fantasy?? Well look no further! (or at all) We got that covered for ya. Nothing worse than an immersion-breaking woman in power, amirite guys?"
I wonder if that was a fan requested feature. If it's being a niche market would imply a dependence on fan-pleasing to stay in business unless they have some untold amassing fortune.
It's a hold over from their grand strategy titles. Koie was originally known for their historical grand strategies set in Three Kingdoms China and Sengoku Jidai Japan, and the Warriors series are spinoffs of those games. The grand strategies were actually grounded in reality, so all of the officers and rulers were male, as they were in real life in those periods and places. Then the option for females take a full part in the game and be treated the same as the males was added later.
... In other words you have it exactly backwards. The existence of powerful females was an a-historical feature added to the games to please the fans.
OT: I always feel like these Empires game come so close to being something really amazingly cool, but are just that bit too shallow to really make it. I enjoyed Dynasty Warriors 8: Empires, but it was just so easy
, even on the hardest difficulties. I don't want to pick this one up if it's basically the same but in Japan...