"Normies dumb, lol" might be a little basic. Jung attempted to bridge a gap between rationalism and mysticism. People off the spectrum can sense something greater than themselves, it might be haywire pattern recognition or evolutionary vestige, but it's there. Few have seriously studied it, fewer were respected, but Jung manged both. Also, like Freud, his seemingly crackpot ideas that were measurably correct (eg complexes, personas, repression/shadows, intro/extroversion, personality types, sublimation, individuation) were just quietly incorporated into popular science, leaving us to laugh at whatever's left. Even those ideas, like archetypes, have launched careers (see Joseph Campbell or Peterson).Jungian thought, much like Freudian thought, is touchy feely and appeals to the common man because of it.
It was discarded in the psychology because psychology moved towards a medical, evidence based model. It's now less about theory and more about science, and Jung fails hilariously when analyzed under that light.