What evidence do you have for that, or are you just pulling it out of your ass?

What games have YOU shipped? Have you worked on a team at Rock Star or EA or any other game development company?

They absolutely do reject people who are “not a culture fit” all the time, how do you think it stays as a boys club? On top of that there’s all the high caliber people who would intentionally avoid applying to work there because of the workplace culture.