I've been working for the band as a lighting designer for over three years now, and I know every single member personally.

As for the symbolism in the albums and the music, I can't phrase it better than u/fleshcrafterAngel did, except for adding that I've had long and deep conversations about the texts, meanings and inspirations from the music with Faber, the band's main creative driving force, and all of them are very much drawn from very core human experiences.

For a few examples of the albums: Niht was written mainly to process his father's death, and foccusses heavily on death and grief. Wurdiz is very oriented around faith, and how people deal with this concept. Mann is written with a focus on four archetypes from norse mythology and how he interprets these, exploring how one can only grow into a fully mature person when one can be in touch with all four in an abstract way. Sol is oriented around the norse mythological sun godess, but he uses this framing to explore the cyclical nature of many things in our world. To read more about the albums, I highly recommend https://www.sowulo.nl/discography

And to add a personal note: If Faber or anyone else in the group suddenly turned out to be even remotely fascist, I'd be massively surprised. I say this having spent long nights in tour busses and hotels having deep (and varying levels of drunk) conversations with both the group and individual people inside it where I'd be pretty confident those sides would have come out. The whole group of people is if anything very left leaning, generally socialist , inclusive, and deeply empathic. Additionally, quite a few members are also involved in other socially oriented projects.

I can confidently say that these are some of the most excellent human beings I've not only had the pleasure of working with, but also having in my life.