The division in the metal world is pretty hilarious, but as someone who has followed underground dance music for the past 25 years I can say that that scene does basically the same thing.
Anything popular enough to headline a festival is crap.
Anyone not popular enough to headline a festival is crap.
Genres that sound too professional are sold out big budget crap for drunk frat boys.
Genres made entirely on 30year old gear are unprofessional and amateurish and are for hardcore users of any drugs that aren't booze.
OGs love to complain about how such and such DJs are naff and too reliant on new technology, despite them having probably never once actually rocked a crowd, and certainly not in years.
New DJs like laugh at old guys because they actually played tracks off discs that could only be played from beginning to end with no quick cueing functions.
Most of the people complaining about various genres of metal have one key weakness: they entertain nobody. The guys who are doing it on stage every day for weeks in a row, the guys that quit their day job, despite the hardship, so they could devote three months of their life to their album, the guys who actually entertain people in person with shit they created, those guys, they are the ones doing it right, no matter what the stuff sounds like. That applies to everything. You don't hear Helloween shitting on that Midwestern American, Cookie Monster vocaled noise with Pro Tools quantized high speed chuggy guitar NüMetal, heal wrestler opening theme Monster Energy Drink anthem, and guys like them are the ones thay have every right to. Its the frustrated Facebook otaku who's mad that this world isn't the place where his favorite band can thrive.
I hate Cookie Monster metal, the stuff where the guitars just chug and the volcalist is totally impossible to understand. It's very very same-y, and I hate evil, so it's not for me. That stuff is changing all metal though. Many of the aspects of that sound work their way even into the world of metal bands that can sing, read music, stay out of jail, etc. Its all God's play and we're just actors in it.