These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Affably Evil: He's friendly, polite and reasonable in most of his interviews, but keep in mind he's a white nationalist who killed a guy and burned down four churches. * The reason this is in the Ymmv page rather than on the main page is you can't really call a real life person good or evil.
I Liked It Better When It Sucked: Sort of. In 2011 Varg released From The Depths of Darkness, an album featuring re-recorded versions of his favourite tracks from the first two albums with more professional musicianship and production. Critics and fans alike reacted less then favourably - the consensus was that the raw performances and shoddy production on the original versions of the tracks in question was a large part of their charm.
Note that this is probably a Mondegreen; it's generally agreed that Varg is actually saying, "This is war" (or "This is for her, war"). But with his strong Norwegian accent, it's hard to tell for certain.
Also, the Burzum parody project Bumzur basically exists to create Burzum memes.