If we're going to feel offended for the sake of being offended . . .

I'm offended pronouns are almost always female.

I'm offended in 3E D&D there exists a plethora of female-only prestige classes but the one male-only prestige class is the Eunuch.

I'm offended whenever there's a matriarchal society in some DM's game it's always She-Woman Man Hater. I acknowledge Rashemen of Forgotten Realms isn't so bad.

I'm offended fluff text will discuss "sisterhoods" alone but never "brotherhoods" alone. It's always "brotherhood and sisterhood" or "brothers and sisters".