Satan is dead. At this point it's clear that you either go full Nietzschean with materialism, and try to find inspiration from aesthetics, or try to find a religion outside the humbling dualism of Christianity. People are choosing religion, demographically, and religion is getting more scientific because it must to not get blown away by changes in attitudes. At the same time people are also getting more conservative because the modern disaster has finally started to show. We're totally out of control of this society because everyone is equal, so you can tell no one that what they're doing is bad (unless it's really obvious, like murder or mass orphan rape). All religious people with brains are starting to adopt a Blake/Emerson transcendentalist view which refutes dualism, although the dumb masses are always going to need some kind of absurd promises. This means the point in being Watain is not there anymore, since they're fighting against a phantom from the 1980s, when we all thought Christian conservatism was going to destroy us all. It turns out the Christian conservatives saved us from the Soviets, and now we're seeing that the hippie way of life just leads to more pollution, hatred, racism, misery and despair.
Futurist metal is going to take a Marshall McLuhan/Voivod approach. Like the best of sentimental mysticism in metal, it will probably embrace the idea of a world beyond this one, although not a dualistic one, more likely one in whatever n-space "m theory" or quantum entanglement proposes. Instead of being humanistic, it will focus on exploration, conquest and discovery. This will be how it transcends the Christian dualism and Jewish guilt-based morality that is inherent to all Abrahamic religions including Islam (and at this point, Judaism has been too Christianized to survive the onslaught, which is sad as it was the last hardcore literalist religion). Nietzscheans in space, exploring micro-organisms, finding ways to tie occultism and Platonic forms to our new knowledge of sub-atomic particles, string theory and emergent patterns. When you think about it, all prog bands want to be Voivod without the candy parts anyway.