Yea, but the converse is true as well. Just because something has a lot of notes, doesn't mean it's not as soulful as some blues player. And just because a musician went to music school, doesn't mean at ALL that they lost any shred of soul in their music.
In fact, that piece really doesn't have a whole lot of "shredding" shit tons of weird notes. Most of the notes are repeated for effect.
Asturias is a BEAUTIFUL song. Did you even listen to the whole thing? It's freaking beautiful. There are MUCH more technical pieces.
If I wanted to just watch some doofus shred electric or acoustic guitar, I'd go watch Yngwie. He can play lots of meaningless notes extremely fast, and it is quite amazing. This is different.
And so what? Throughout the entirety of the 14th - 19th centuries, music just had no soul? Because everyone studied the hell out of it and wrote more complex pieces? Or what?
It's not about technique. And all those things I said... for instance about the rubato, are all about musical phrasing, and not technique. All the things about which strings the bass is played on has nothing to do with technique and all to do with how the piece sounds (those lower strings give more OOMPH to the bass). The fact that I mentioned that she was an extremely good guitar player (better than the rest in this thread) was just an aside.
Here's Leo Kottke:
https://www.youtube.com/watch?v=tew_fIhz3eY
Also this:
I could also talk about John Butler about his latin techniques and whatnot. But then I guess he'd lose some soul.
In my opinion, most peeps just can't handle key changes, and when that shit happens, they just lose interest. That simple. They want some big fat bass that goes through the whole thing (HOLY SHIT LOOK WHATS EPICLY POPULAR RIGHT NOW... DUBSTEP). Almost all popular music these days is in one key, has no harmonic depth (no interesting chords), and pretty much just lands on a BIG FAT 1 chord every 2 bars. And in my opinion, this is because peeps can't hear key changes, and they don't get the sound.
And actually, scratch that about Yngwie and replace it with Buckethead. That dude straight up plays shit that me and my friends made up for technique exercises... except he plays it as a song. Absolutely fretboard formula no-musicality technique shred. And it is pretty awesome as that, but not for being musical.