Nihilist poseurs and tiresome decadent rebels?

[Robert Adam Gilmour]

Not really a rant. I love this forum and I like most of the people here but on occasion I roll my eyes at some statements about existence or human life, not because I completely disagree (sometimes I do, sometimes I dont) but the manner in which it's expressed. It can seem a bit performative.
Sometimes they're talking about the meaninglessness of everything, in a manner perhaps a bit too grand and majestic for someone who believes that. Or maybe I've misunderstood them?

Why does nihilism sometimes attract poseurs, with sometimes fascist leanings? I'd like to know exactly what inspired the depiction of nihilists in The Big Lebowski. It's funny to imagine them based on real people.

In dark and heavy music in particular there is a lot of this. Even some musicians I deeply respect define themselves too much in opposition to the people they don't like. I don't believe you can properly flourish if you focus on being the opposite of people you hate, you might end up even being a sort of similar yet distorted mirror image of them.

Boyd Rice exudes some of these qualities so much I don't really want to listen to his music.

I recently read a negative review of Huysmans that suggests he's a bit like some of this. Is he? Is it a part of decadent art to be selfconsciously outrageous?

Thoughts?