A popular The Menu theory reveals that Margot didn't escape Chef Slowik's deadly plans unscathed and that Margot does die in The Menu's end. As a punchy and poignant dark comedy horror movie, The Menu is rife with commentary about the relationship between consumer and creator, with messages that apply both to industries outside of the world of food, and to classism as a whole. This is balanced carefully with murders, mutilations, and general mayhem, creating a setting wherein audiences root for the plucky underdog protagonist Margot to escape with her life.

https://screenrant.com/the-menu-chef-slowik-killed-margot-cheeseburger-theory/