Would Turner have been a landmark artist today? He'd probably be something like Johnny Nice Painter today just doing moody landscapes for a local society.
You can't separate art from it's time. And why would you?
This just comes across as another old fart thread for those coming to terms with the loss of youth.
If you still enjoy listening to it then it's as good as it ever was. The kids (along with the business itself as ever), decide what music, if anything at all, drives the music business today and why on earth would they be into Steely Dan? It's old farts music. We like it because we are old farts and it's of our time.
Simples.