“If intellectual music means mind engaging and rich, it’s hard to find any in rock aside from heavy metal.”
Correct.
The pablum the poster refers to is bird music for girls.
Just like 99% of Mozart, who wrote a single great work in a minor key...Requiem.
Brain music comes from Beethoven, Brahms, Wagner, Mendelssohn, Mahler etc.
And let’s not forget Black Sabbath. The Pinnacle of Brain music from the 20th century.
“That’s not racket, that’s Brahms....Brahm’s Third Racket!” - Basil Fawlty