I actually quite like a fair bit of djent stuff. I do agree that it has become a massively trendy micro-genre, too strictly self-categorised and pigeonholed to generally allow much in the way of development or innovation, however. For a while, I saw a bunch of bands who'd previously hopped happily on board the deathcore bandwagon start transitioning to writing stuttery sub-Meshuggah polyrhythmic riffs on recently-bought 8-strings in a desperate attempt to get on board with the next big thing. That said, much like with just about every genre or sub-genre of music that exists, 'djent' does not necessarily always mean 'bad'.
How about this, for instance;
I think the dividing line between shitty bandwagon-jumpers and actual decent bands that utilise 'djent' stylings is that the shitty bands just go for extended-range instruments and fiddly timings, whereas the decent exponents of the genre use such djent tropes in service of writing actual songs.
All that said, I'm hugely aware that I'm in the overwhelming minority here at RC where it comes to liking this sort of thing. XD