I think some of the elements of the whole "djent" think are really... really... neat! And that's about where it ends. The fanboys out there act like it's some sort of musical genius because it's got flippin' mixed groups of 2 and 3 over 4. Well woopdie friggin' doo! Go listen to Elliot Carter for an hour or two and let your noodle fry on rhythm. Oh, they can play stacked fifths in harmonic movements of thirds? Wow-ee-zow-ee! I urge you to listen to "And the Mountains Rising Nowhere" by Joseph Schwantner and bask in the glory of how he decorates those sonorities. Glitchy sections? Xenakis. Drones? Giaccinto Scelsi. Dem feels? "Fratres" by Arvo Part. Awesome harmonic complexity with very little change over periods of time? Steve Reich.
As I said earlier, my biggest beef is that in an effort to sound "big" and "brutal", most of the riffs become trite, boring, and lifeless. The production is totally flat to the point of losing all of my interest, and everything is compressed and limited to the point that it is sonically unexciting. Wow - the verse is as loud as the chorus! There is almost no envelope on any of the notes other than the tonal quality because home studio mastering!
They have, in an effort to gain that polished, big sound, reduced the music to a wall of nothingness. So why is it so exciting to people? Well, I'm assuming it's because a couple of generations have listened to music almost solely through earbuds or laptop speakers and that the quality is generally little more than a streamed Youtube channel or Soundcloud-like file sharing website delivering the loud wall of crap directly to the ears. Deaf mamma jammas, basically.
I agree with some of this. The musical examples you quote are some of the greats.... I'm a huge fan of Steve Reich and Arvo Part. Schoenberg also... and this is where I draw parallels. Schoenberg was slated by a lot of his contemporaries, including Segovia who was rather mean by calling him an 'ugly man with ugly music'. However, Schoenberg's music has dynamics, and a great capacity for interpretation of touch and feel, moreso than the score would leave you to believe.
The appeal of djent to me is that it takes the percussiveness of music and uses modern production techniques to take it to the limit (no pun intended). This can be a good and bad thing, and it depends really on how organic you like your music. Personally, I have no problem with machine music. Just don't ask for improv.
I'm not a teenager and am well past my 20's. I'm in my late 30's and I didn't grow up with youtube and earbuds. The 'wall of crap' argument doesn't hold, just as it didn't hold when thrash first broke the rock and punk mold. It's just a music evolution. Not a revolution, as some would have it.
I love music. I like the subtleties of a great classical performance, the way the theatre seems to resonate with a great conductor. I love the subtleties of drone music, the way Sunn(O))) seem to get inside my mind, the way Ordo Ad Chao just crawls inside my brain and forces me to very dark places. I love Spiegel Im Spiegel, and how everything seems to breathe and put a tear in my eyes even without words. I love pop, how Lana Del Ray sounds like the epitome of the early 21st century dream sleaze queen.... it's right there in her performances. I love Eminem's ability to spray deep seated anger and Slayer's ability to use a hammer to do it. And I love Periphery sometimes with the pounding junction of guitars, bass and drums on The Walk, the stereo field utterly full and relentlessly barraging me. I love Meshuggah, how Spasm challenges with bone rattling low frequencies, how Break Those Bones... manages to fire me into action every time I listen to it... how Bleed has the same ability.....
In composition, one of the rules is to try to compose without your instrument. People forget this, and rely on preprogrammed muscle memoric patterns to come up with ideas. Very few listen to their head any more. This is both positive and negative. As a positive, it gave is Rock, Metal, Djent. As a negative, it gave us a million variations on the same pentatonic themes which are easy on the guitar, and filled music with dross.
That's just the way of it.