I absolutely love Varg's music but goddamn his brain damage is unbearable. He's like a crying child begging to suck on mother's titty and Fenriz has all the temperament of a teenage woman. These are the two protagonists so the film definitely did a good job making this movement look cringe and despicable. Luckily, it does go beyond that though and does a beautiful job exploring commodification, legacy, male loneliness and even friendship.
Both Varg and Fenriz are at similar states today but neither will listen to their hearts.

Harmony Korine's one-minute cameo, which I had no idea was coming, was oddly the crux of the film in a way. He came in as a fan of both the music and the movement's extemeties and tap dances in the Helvete gallery wearing corpse paint and the most ridiculous wig. It's like the ultimate mockery of the genre becoming a trend, just to piss Fenriz off (and presumably Varg too) and then leave back to America. Haha loved it.