Perhaps it's gaming culture's way of being more inclusive. I happen to know a lot of very attractive women because I am friends with many photographers throughout the US and Europe. I meet many women you wouldn't think fit the stereotype for gamer. Hell, some of them don't look the stereotype for anything because a very attractive woman is intimidating to men in real-life social settings.
The six-foot tall slender busty goddess-like woman will be the least chatted up at any given soiree. It's a fact. Lots of women don't feel like anything other than makeup and lingerie is catered to them at all. So, oddly enough, what you see as something being "sexed up" is just a welcome friendly face to others.