Because the art industry isn't just "music and movies." It's an interrelated creativity hub.
If you take away visual and experimental arts you also lose good music and movies. And good graphic design. And good architecture. And more.
If you think this is exaggeration, consider that not a few household name musicians - Eno and a long list of others - went to art school, not music school.
Elvis, Beatles, Queen, Kanye West, Rihanna, Madonna, Beyoncé, Adele, etc are household name musicians.
Brian Eno is maybe a strong influence in the field, but few regular people outside of actual musicians have heard of him around the world, I'd venture.
I hadn't known about him before reading his Wikipedia page, just now. And I tend to read a lot :-)
Ask a few random folks of various ages, on the street. Check out YouTube views for some of their videos, weighted by decade (videos from the 80s with tens of millions of views can be considered as popular as stuff with high hundreds of millions now). Album sales. Chart rankings from multiple countries. Endorsement revenues.
He may have been a household name in England. I have no idea. If you're into electronic music, I think you're bound to see him mentioned somewhere because it seems people like namedropping him.
That said, I completely agree that you can't expect any young people to know who he is.
If you take away visual and experimental arts you also lose good music and movies. And good graphic design. And good architecture. And more.
If you think this is exaggeration, consider that not a few household name musicians - Eno and a long list of others - went to art school, not music school.