Discrimination against intelligence
Anti-intellectualism https://www.merriam-webster.com/dictionary/anti-intellectual
opposing or hostile to intellectuals or to an intellectual view or approach
Wikipedia currently describes it as
Anti-intellectualism is hostility to and mistrust of intellect, intellectuals, and intellectualism commonly expressed as deprecation of education and philosophy, and the dismissal of art, literature, and science as impractical and even contemptible human pursuits.