I don't think that one can codify black metal as a one simple ideology. Even the early 90s norwegian scenes bands seemingly had all different take on the subject, with euronomoys even publically supporting communism (well, at least the totalitarian form of stalin, pol pot and others).
As for the subject of drum machines, I'd agree that they should be major thematic element in the music, where they actually support the music and aren't simply cheap replacement for real drummer. In general, I cannot stand when any form of rock or metal sounds too well played, stable or over-produced. Worst of course are djent where the drummer sounds exactly like a drum machine, at which point I ask myself, why the fuck bother except for the bragging rights? To me the lofi, less technical material is much more preferable, where bands like vetala, black cilice and others have given the goods in recent years. To me those are much more succesfull at being noise/black metal than any half-assed attempt at forcing the two together. In general, I myself find the studio produced, shiny, colour painted cover artwork black metal about as abhorrent thing that one can get and in a way, complete antithesis to me what black metal is and was.
