Black Metal is such a contentious sub-genre that I often find myself wondering why I still listen to any of it, but truth be told, I love the stuff! Shit is definitely different now because there are a ton of great anti-fascist BM bands actively fighting against the old stigma of all BM fans being secret Nazis and I think its important to point that out and lift those voices (looking at you Gaylord, Avvika, Underdark etc...).
All that being said, if Hockey/FA is actually paying Varg to use Burzum then that is fucked because then they are actively supporting the dudes lifestyle by way of financial support. That being said, I wouldn't be surprised if they used it without his knowledge because there's no way Varg is in his hut scouring YouTube for the latest edits. When I was an edgy teen I listened to Burzum but I never bought his music, would just pirate that shit because fuck giving money to fascists.