I'm not sure you answered the question. Games have been giving boys and girls the same job (or even power at it) for years, this is true, but there's nothing really sexist about that in and off itself. DD in particular doesn't really go too deeply into the psychology of it's adventurers, you mostly get to handle them in their professional environment, so there's no reason to go into even specualting about how their malenss or femaleness would work out, and in the end they'd certainly step into any of the million pitfalls of trying to mechanically define a woman (or even a man), not to mention one of a whole entire species.
Because most of those really are, for the most part, cultural. My country, for example, is rather small, but contains vastly different people, and I've interacted with women of different cultural backgrounds (all kinda authotitarian with a strong drive to shape all their members into presentable member of their particular tribe/region/religion/whatever). You could simply not draw any conclusion about woomanhood from all these people! They were shaped by different things, sometimes completely different things and while guys from their hometowns or villages could very assuredly tell you what you can expect of "a woman", I can quite assuredly tell you what's likely to have shaped a woman... from that particular town or village. What happens startlingly often is that when people go to a larger centre to study they get drawn to women from completely different backgrounds simply because they're sick of the baggagge women in their hometown get saddled wih and they are thrilled by the discovery that there are women in the world which are completyl different than what they've been thaught a woman is.
Because a woman is, really, a completely blank slate which differs from guys for most practical puroses by having a menses cycle and a bit more hyperactive hormones on a monthly basis. That's it. Painting them as anything more mechanicaly specific than that is painting a member of a society or an individual, not a more athentic woman.
What IS groundbreaking in the DD approach to portraying women is the same thing that's kinda great about portraying guys. They're more grotesques than idealizations, which puts them visualy closer to realism or naturalism than you usually (or even ever) get in videogames. And they're empathicaly not oversexualized, which is great - giving boys and girls equal stats for being of a certian profession is something that's been done before, but it's the way thigs ought to be done, having boys and girls look like having those skills/stats at the same time makes sense wasn't.