I don't think that's entirely true. even if they use sexual and racial slurs, it's apparent from the article that they are used as insults directed at each other. I'm a white hetero male developer (not game-dev though) myself, and I'm not sure I'd be able to work in a environment such as the one described for too long. I mean it'd certainly be easier for me, given my biological "fitting in" with the rest of the group. I'd still have a hard time in such a culture.