A few reasons that I can see. None of them anti-intellectual.

1. Collage and University is increasingly expensive. Well beyond inflation.
2. And increasingly not a guaranteed path to financial freedom.
3. AI is clearly going after knowledge work first, epically entry level knowledge work that one would do out of collage.
4. Decades of those like you denigrating less educated (yet arguably more important) work, combined with the first reasons may have made some disdainful of being pushed into higher education.