Interesting debate, I'll weigh in with another line of sight.
The quest for the tone and sound can take many a path. For some it's simply an acoustic instrument, for others it's an electric instrument plugged into a tube amp, for others it's a more complex configuration. In any case, it's a personal journey.
Honing one's craft is also a personal journey. From
A Preface To Guitar Craft by Robert Fripp:
The musician acquires craft in order to operate in the world. It is the patterning of information, function and feeling which brings together the world of music and sound, and enables the musician to perform to an audience. These patterns can be expressed in a series of instructions, manuals, techniques and principles of working.
This is the visible side of craft, and prepares the musician for performance. It is generally referred to as technique. The greater the technique, the less it is apparent.
The list of brilliant musicians across all genres and instruments who refuse to see these two journeys as either mutually exclusive or a choice for concentration is endless. I am as likely to be humbled watching a talented player navigate a complex series of changes as I am watching an electronic musician navigate buttons, switches, and devices. A favorite example of a musician who does both extremely well is Bill Frisell. In any case, the fundamental question to be answered is simple - does the music touch me?
I'm with bOb on practicing scales and non-musical patterns to build technique. Matter of fact, I may be the only guy on the planet practicing Guitar Craft Primaries on lap steel! And when I am working on technique it is generally acoustic, dry, or even unplugged. There is a direct correlation between the time I invest in the "boring" stuff and the transparency of technique when I am performing, writing or recording music.
I also work with sound at many levels; instruments, devices, analog and digital effects units, plug-ins, amps, loops, etc. Developing technique in this space is also important for some of the music I make. The aim for me isn't "funny noises", rather tones and sounds that contribute to my music. I dig the sound of a naked acoustic guitar. I dig a baritone Tele through a spring reverb in a tube amp. But I dig a lo-fi, filtered, decimated, pitch-shifted lap steel played with an eBow, too!
I hang out here and at the forum over at
http://psychopompos.org/, and a few others, too. I wonder if many of us frequent both places. There is some absolutely fascinating music being created by the members of that forum, too. Some of the music is breathtaking, some of the approach is thought provoking, some of the music doesn't touch me or make me think. That's okay, but it doesn't make the work any less valid. And for what it's worth, I don't recall any members of that forum poking fun at the music created by this forum's members.
Speaking of practice, I have an acoustic guitar ensemble performance in Chicago this weekend - no effects, just a pick and strings! For those in the area I'll be performing with Guitar Circle of Chicago at 6:30 pm at The HomeGrown Music Series, details over at
http://www.guitarcircleofchicago.com.