The Funkwhale music platform is alive and in active development, and they’re working on a feature to filter far-right artists off the network. Some Fediverse self-hosters are divided on letting a third party decide what should be allowed in their library.
But there is a load of really dodge black metal that is much more cryptic, not being blatant but made by Nazis like Deathspell Omega, Mgla, Drudkh and Winterfyllth. I’ve been in the scene a long time and been fooled by some of these.
Oh for sure, there’s exceptions to the rule, I’ve been fooled too. Peste Noir, Drudkh, Deathspell Omega, Burzum all end up on essentials lists, definitely contributes.