I don't believe in "undefinable nuance." I believe there's such a thing as a person who has not yet learned what that nuance consists of, who is unable to define it. The limitation is on that person, who needs more study or practice in order to learn how to define the nuance. Education is not something that needs to be overcome. It helps you to overcome the obstacles of ignorance. To say that an "academic" agrees with you because they say that "jazz pedagogy has become... theoretical," is a stretch, man. I already pointed out that pedagogy is theoretical in nature.
The spark that separates a great musician from a good one is a combination of their hardware as dictated by DNA, their time spent in the shed, and their ability to draw from their life's experiences to inspire creation. Education contributes to both of the latter 2 categories.
To single out some of your criticisms ("...nothing to communicate on a melodic, emotional or human level."), if their melodicism is lacking, they need to work on the basic concepts of melody:
-interaction with harmony, i.e. chord tones and tensions.
-melodic contour.
-development of intensity.
-phrasing.
-motivic development.
-contrast.
If they are lacking "emotional" content, they need more study of development of intensity, learning where to double-time, growl, go higher, lower, louder, softer. Most of the things interpreted as good emotional content are phrases that suddenly contrast what's happened before, have a growl or bend, and are accompanied by a scrunching of the eyebrows. Sorry, but it's true.
There IS such a thing as ACTUAL emotional content, but it's much more easily expressed once the tools of the trade are picked up, so to speak. This is an issue which is much more difficult to train or quantify, because everyone has a different idea of what sound conveys what emotion. However, I had a good lab at Berklee where one of the projects consisted of pulling up a card with a feeling or emotion we were supposed to convey, and then trying to blow a solo that did that. Good exercise. In the end, you can learn to fake it enough that it doesn't have to be real all the time, though.
To illustrate my point: I remember going to a "funk" jam in NYC a couple months ago for the first time. The playing was very good, but after the house band finished, it turned into a gospel singers' jam. I played horn lines with the house tenor guy from 9PM until around 1:30, when they gave us both a solo. He played a killin Brecker-type thing, and I didn't even want to try to hang when he finished, because it's really hard to develop a good solo in C# when your main concern is how your *** hurts from sitting on the sharp edge of the stage all night. I completely phoned it in, which I remember because I don't do it often. I started soft, played some pentatonic crap, played a couple loud, accented, high notes that dropped immediately to soft stuff. Played some louder, faster pentatonic **** and called it a night. On my way home, a drummer friend of mine who had brought me to that session for the first time that night called me up and told me I had slayed everyone, especially the quasi-big-time singer who ran the session because of my "mature," "emotional" playing. I "told a story," gush, gush. Man, I was bored out of my mind! I haven't even gone back to that hit. However, I learned how to fake it well enough that the crowd and the pro musicians loved the "emotional" content.
I know what you mean about that "human" level, and there are lots of exercises to help you bring your personal experiences into the music. Learning the lyrics, focusing on their meanings, or a personal experience they remind you of, recording your attempts to characterize those emotions, analyzing what was the first thing you tried to PLAY to convey that emotion, versus what would be a great recording that epitomizes that to you. Taking notes and comparing/contrasting several approaches that you consider visceral. It's all stuff that can be and is done in the classroom.
Unfortunately-- and this is the crux of the only problem I have with you, cuz you seem like a nice guy, and I understand and even agree with what is the ROOT ideal of your argument-- you have NO IDEA WHAT GOES ON IN THE CLASSROOM, not having been privy to a first rate jazz education. All the things you wish could be taught ARE taught. Not all the students learn it, but who among us learns everything we were taught in college? The main reason I haven't gotten seriously interested in grad school is that I'm still VERY BUSY learning what I was taught in college!
For the record, in my first lesson with one of the private instructors I took for several semesters at Berklee, I transcribed Cannonball Adderley's performance of "Never Will I Marry," from "Cannonball and the Pollwinners" for my private lesson. Part of the curriculum for the first 7 semesters of the performance major is to play "prepared pieces in contrasting styles," aka a solo transcription and a classical etude. I also took a course in transcription. That pretty much covers the deficiency noted in the article, I think.
It sounds cliche, but I'm living proof that the system works. I'm not the greatest player by a long shot but all the things you criticize about jazz education are my primary strengths as a player. Technical facility, advanced harmonic expression and a large vocabulary are NOT my strengths, especially in my local musical environment. I am a melodic player, and a ballsy player, but I could barely blow a solo before I went to college.
I'll dig around. I'm gonna try and find before and after recordings. You'll see. But not tonight...