Saltburn and the fear of the poor

Saltburn (2023) was one of the biggest viral films on Tiktok for it's numerous shocking scenes, excellent cinematography and catchy soundtrack. But one element of criticism it received was that many couldn't follow the theme of the film.
While it drew elements from "The Talented Mr. Ripley" and many other film classics it's message seemed muttled to many critics.
The writer can target the films core thesis, which is that the rich, should rightly fear their economic lessers because they're scoundrels.
The writer can draw from historical rage against the rich along with the contemporary resentment of the wealthy and widespread calls of "Eat The Rich" along with the general antipathy of classes as economic disparity grows more every day.