His blog is a cesspool of antisemitic paranoia (he considers Christians and Muslims to be Jews because their religions are descendant from Judaism or whatever) and general neo-nazi nuttery. Even if he tore Brevik’s particular variation, their political differences are nil. I’d say the well is poisoned already.
Also, I would be more sceptical about his story about the murder. I remember some pretty fantastic claims (like Euronymous died because he fell down the stairs - without explaining how he got 20+ knife wounds).