Mike Dimin said:
It seems that this discussion has evolved into "a good ear is more important than being able to read" and such statements. It is not about which skill is better or even more necessary...
.reading is just one, developing a good ear is another. Both are invaluable.
But not equally invaluable, depending on the context, their relative importance can vary widely.
There's also another side to the story. How much time can you devote to learning.
You as a working professional may find both skills equally invaluable. You as a working pro have no excuse not to take the time to learn all aspects of your craft.
Take a weekend warrior in a bar band though, playing with a bunch of other guys that can't read, let alone write charts. Having no charts tends to diminish the invaluability of being able to read music, IMO.

And weekend warriors available time to spend on music is more limited, its a sideline rather than a full time occupation, so it makes sense for them to focus their limited time on things that have the most effect on their employability, or enjoyability.
So there are certainly cases where the time spent learning to read can be better spent working on other things, which in their situation (but not yours) could indeed put reading skills further down the list of priorities. When you have limited resources, you should concentrate on what gives you the most bang for your limited bucks.
I was classically trained on trumpet, was a fluent sight reader, spent no time playing by ear, I was very deficient at that. So worked on that hard over the years, and now am quite good at it. I've only had a few situtations in 30 years since HS where reading was useful. So now I'm rusty at reading.
But that is entirely due to the circles I play in. If I want to get theater gigs, jazz gigs, recording sessions, I'd be brushing up on my reading again, no doubt.
Learning to read Chinese would be handy also... if you were going to China. Not everyone needs to go to China.
Randy