Its usually more to do with the fact that said "fake gamer girls"
behave like the cast of the Big Bang Theory, due to that shows popularity; most gamers find that show stereotypical(and sometimes outright offensive), so when said female fans of the show pretend to be one of us, they are very likely to act as annoying as the show; to add to their "nerd authenticity" they try to cite lore/talk about a game, and their attempts to do so are cringe-worthy and sometimes annoying.
Or, rather to use an analogy,
It's like a person pretends to be a movie soak when they've only ever seen Twilight and Transformers.
Also, this is the internet, it always blows shit out of proportion.
EDIT: the only time I've experienced anything close to this was when a guy in my science class tried to act like Sheldon Cooper every lesson, whilst sitting next to me.
God, was that annoying(proves to show that it can happen with both Genders(and is also not limited to attractive women,but that's a story for another time))
behave like the cast of the Big Bang Theory, due to that shows popularity; most gamers find that show stereotypical(and sometimes outright offensive), so when said female fans of the show pretend to be one of us, they are very likely to act as annoying as the show; to add to their "nerd authenticity" they try to cite lore/talk about a game, and their attempts to do so are cringe-worthy and sometimes annoying.
Or, rather to use an analogy,
It's like a person pretends to be a movie soak when they've only ever seen Twilight and Transformers.
Also, this is the internet, it always blows shit out of proportion.
EDIT: the only time I've experienced anything close to this was when a guy in my science class tried to act like Sheldon Cooper every lesson, whilst sitting next to me.
God, was that annoying(proves to show that it can happen with both Genders(and is also not limited to attractive women,but that's a story for another time))