Good question. I am not a serious musician, but I know that long before today's technology, there were great musicians. Jaco, Miles, Jamerson, Mozart etc...never had portable players.
Personally, I am inundated with music even though I do not use a portable device. I listen at home, every time I am in my vehicle and through headphones at work (when I had a job). My life is pretty contained to those arenas so I am almost always listening to the music that I am learning. If I take a walk, go fishing or play a game of hoop I consider it balance and feel that is is a healthy break from being inundated.
WOW...i tried to post, but we get nice warnings when someone beats us to it.
To add, I agree that there is a greater variety of music available, but most musicians play in a limited number of environments. I know that I have a lot to learn, but other than some fancy runs and jazzy chord changes, I don't think music is really much more complicated than past generations. Other than the pop that originated in and matured out of the 50's and 60's, some may say it is less complicated.