Um no, it's not due to the programmer being sexist. It's due to a flawed understanding of history. Nor is anyone here suggesting DoF should be restricted to males because they're sexist.
I mean, seriously?
Yes. Seriously. Where does the title "defender of the faith" come from? ANY reasonable study of its history, and I mean literally any, finds women held that actual title. So, your choices are one of two: either it's fabricated based on total ignorance of history, and they decided to just conclude history was sexist so it must have been here and threw this in, or it's based on history and decided to block women anyway. I'm going out on a limb and assuming it's the former, mostly cause I mostly like these devs and all, and whoever put it in just assumed that history is sexist and so inserted their perception of history into this title when it was ahistorical and unnecessary.
I mean, seriously... if you google defender of the faith, the first result (fidei defensor) or the first link off the wiki for that phrase starts with a woman sharing it with her husband and ends with a woman holding it as I type this. There's just no way to get around the absurdity of males-only for the title without either inadvertent sexism due to ignorance, or overt sexism due to who knows why. I'm sorry if it offends you, and only a little sorry if it offends whoever put it in as males only, but they SHOULD feel bad about doing it. Assuming this title like so many other aspects of the Christian world at the time would be sexist and making it so, when it was not, is still a bad mistake.
The closest analogy to prove your point is actually embracing the counter reformation. There is obviously a religion OR innovation choice in this game. The reason this exists is because religion was basically accepted as the source of knowledge for all things. And in this time frame specifically, innovation occurred because of the challenge to the status quo, which for the most part was provided by religion. The world is not flat. It is better for society that people can read and have books. The sun does not revolve around the Earth. Religious leaders of the time had a huge interest in limiting knowledge. If you are the ones in charge, your greatest enemies are change and knowledge that disprove what you have been spoon feeding the people who follow you. Progress, and a well informed populace lead to challenges of the status quo.
This is a modern misconception that is fundamentally false. The Catholic church did not oppose Columbus because the earth was flat, they opposed him because he was absolutely wrong about the distance he needed to travel. Anyone, and I mean anyone, can pick up a map or globe and very clearly see that the distance from Spain to the Caribbean is FAR less than the distance from Spain to India if the Americas didn't exist. The Greeks and the church knew, Columbus did not, he got VERY lucky his trip didn't end in failure and starvation/dehydration.
The idea that people can read and have books was pushed by religion. Religious leaders of the time had a huge interest in spreading knowledge. If you wholeheartedly believe that your God is the source of all knowledge, you will not be afraid of knowledge! The reformation spread literacy. The Jesuits spread education. Universities and schooling were promoted first for religious reasons. The most prestigious schools in the Christian/Western world today were initially established by and for religion.
Don't project a modern view of today's religious forces onto the world of the early 19th century and before. I am telling you this as an atheist myself. Religion didn't just not conflict with progress and innovation, it was the driving force behind it at this time!