That we should even be considering this question raises my ire! Absolutely not! If anything, he even more relevant now than before.
I suggest skipping Plato,Aristotle and Hegel for Philosophy classes
skipping Count Basie and the Duke for Big Band Arranging,
Kokoschka and Hopper for 20th century art
and Bohr and Heisenberg for modern physics
anyone who calls bill irrelevant is out of his skull
what's next Tennyson?Chaucer?Bacon?Wells?bronte?