stupidism

noun3

1. •
   A stupid utterance, act, or process.

   • No; we have no such ancient stupidisms. — 1889
2. •
   A stance of wilful ignorance, anti-intellectualism, and/or stupidity; the embracing of stupidity.

   • He had now become one of the thousands, millions, smarting under plain stupidism passing for Americanism. — 1962
3. •
   (rare) Discrimination against stupid people.

   • He has already helped refute “racism” by publicly demonstrating that many BLMers are discriminated against because of “stupidism” (widespread bias against stupidity), not racism. — 2023