The movie "Backrooms" is performing well at the box office, with some reports indicating it has crossed $100 million domestically, making it A24's highest-grossing movie in the US. The film's success, along with other recent horror movies, may be changing Hollywood's understanding of what young people want to see. The exact implications of "Backrooms"' box office performance are still being assessed, with some outlets suggesting it could upset other movies for the top spot, while others see it as part of a broader trend of successful small-budget horror films.