The movie did have an unfortunate eugenic implication, which is doubly unfortunate because it wasn’t even necessary for the plot. Society can just get dumb due to people not valuing education.
Genetically we’re not that different from cavemen, so the floor (without any weird eugenic theories about dumb people breeding too much) is “tamed caveman.”
>The movie did have an unfortunate eugenic implication
You’re thinking of dysgenic, not eugenic.
Gattaca is a movie about eugenics.
Education is still very much present in Idiocracy (Brawndo blah blah). It's the lack of value in logic and thought process that causes the problem. When people value winning an argument on a logical fallacy, there's a severe issue. Education is oft used as the fallacy itself.
Much like today on all sides of every significant debate. Where the loudest most emotional rise on feelings over logic.
If a person doesn't immensely value learning they're wrong, they exist as part of the problem.