Outstanding. And if I can somewhat paraphrase: metal has taught us about PERSPECTIVE. Metal conveys a God-like perspective and, thus, influences our priorities accordingly. Metal trains us to transcend our narrow, individual perspective. And by conveying information in the form of music, metal teaches us and trains us about things to the extent that we FEEL IT. We don't just learn these lessons intellectually, with our head. Metal (and Classical) actually makes us FEEL its wisdom in our hearts and our guts.
I think this lesson dovetails with what you say here:
Metal also intoduced me into thinking of sound-scapes and structuralism in music
Me too. I have no academic understanding of music, but metal has taught me how to understand music more intellectually, even though, at first, metal is simply a gut feeling. By returning to the same pieces over and over again, and by reflecting on them, you learn that music can be and should be more than just wallpaper.
I would also add that metal teaches us the same lesson about music that Arthur Schopenhauer teaches us about music (i.e. music is the will, itself). I suppose to call this merely a "lesson" is understating it. Metal and Schopenhauer reveal to us what music REALLY is or can be.
EDIT: To further illustrate what I'm trying to say: If it wasn't for metal, I think it might be harder for me to think of Kraftwerk as anything more than dance music.