A lot of the world is still very comfortable with the idea of archaic gender roles. I assume things like this make it into our media (games, TV, etc) in large part simply out of habit. Then add to that how a large majority of people wouldn't even notice it, and the two add up to slow slow change.

I doubt LDW thought it could or would have offended anyone. I don't know what the tone of the original post was, but I do think your (or your cousin) having voiced your thoughts has value. It isn't an issue as to whether or not a person is "upset over a game" or not. The importance is that it puts the thought of more broad-minded gender equality out there. And maybe the next time the genders will be represented more openly in that manner. It isn't about "a game," it is about the normalization of all genders being "role-free," and how media portrays these things does matter.