The first time I got into death metal it was through an Australian band called The Berzerker. The label Earache was one I had been familiar with trying out bands like Napalm Death, Carcass, and Bolt Thrower. What Earache had always done was sign up bands who were pushing hard, growing, and on the cutting edge of what was extreme. They simply had the idea that Extreme's Always Sell. This isn't entirely true I can tell you from experience listening to some of the most extreme music I could find when I was younger. But, with a massive touring schedule and some quality studio production, the idea is pretty accurate.
You cannot simply sell a band like machinoir when I refused for years to play shows, to sell anything, or to publicise myself in the right ways. The same can be said of other musicians like Vulgar Disease (Mario's other band Dopamine Larvae is worth hearing as well), Herr Schmitd Hat Krach, God Pussy, or a range of who have been making music as long as me, but not pushing into publishing and promotion.
This goes for many types of art. There are underground zines with controversial statements, bloggers, artists, designers ... but you need to be able to communicate and self promote. Tucker Max may not be the best case, but he shares views many many people, and has the ability to express himself. Merzbow and Whitehouse in music, Zizek and Nietzsche, Von Trier and Korine, and some of those who have found this middle ground.
I'm currently reading Plutarch. Plutarch doesn't seem so extreme, but what is interesting is how inaccurate it is. What mattered was his ability to capture an audience. It is accessibility that can make a work stand out.
For example the less scientific writing of Pinker is more accessible than Chomsky. Chomsky has become one of those authors many people own but haven't got around to reading, not dissimilar to that dusty copy of Hamlet, The Illiad, or A Clockwork Orange you may have lying around. They have become well known through more accessible means than there original works as their stories are retold, referenced, or reused by others.
With my project Do Not Design, my views were compared to Tony Fry. Fry is an Australian environmental-design-and-stuff professor, who has numerous interesting ideas. The reason he remains known only amongst academics is because he writes terribly. What I seem to be able to express to you simply, gets broken into verbose terms, oddly structured sentences, more notes and references than make sense, and bracketed sections that detract from reading.
At the other end of the spectrum is Al Gore. Al knows how to grab an audience. I recall a speech he gave where to show how dramatic his graph was, he used a crane to show where its peak went. Al’s accuracy has been questioned, not unlike Plutarch who I mentioned earlier, but still he has had more impact than anyone else up to this point because he can communicate well.
While we are taught to be accurate, the film Kony grabbed more of an audience than any simply stated news story before it.
Maybe you can blame people for being lazy. As one teacher put it to me, this is education, not entertainment. I believe at the time I agreed, but now I'm not so sure. Why can’t it be both? I am not learning German because I need to, but because the gamification built in makes it enjoyable. It is easier to listen to extreme music with good production than without. And people are more likely to learn about design by reading the entertaining works of Deyan Sudjic, Alice Rawsthorn, and listening to Fanella Kernebone, than trying to go through a dense list of peer reviewed articles.