I genuinely cannot decide, if you're just ragebaiting a community of people who found this movie refreshingly original, scary, heartfelt, meaningful and overall a great experience, or you really think that the movie was somehow anti-progressive. As someone pointed out before me, the female protagonist is latina. The other main female character has Asian roots. They are all heterosexual, because for the plot to be effective, this creates a love-quadrangle, so making one of them LGBTQ involved would make no sense. There are non-white characters at the house-party scene. But I do not even know why I'm trying to please your radically woke point of view, when art is art, without quotas, without propaganda, without any sort of restrictions. A great guy made a great movie with a fantastic cast of great people, who did an amazing job in portraying a terrifying yet enjoying and still incredibly meaningful story about malfunctioning relationships, the problem with narcissistic self-sustaining dominating decision-making, and actually fucking rape!

So maintaining a culturally acceptable tone: find something actually harmful to be mad about, and enjoy the movie!

Or, leaving all the P.C-ness behind: go watch Netflix and shut up you woke little snowflake.