Being honest, and much of what I love IS Electronic, the idea that it's not music is understandable. When you look back to Musique Concrete, it was pretty much challenging what can or can't be construed as music, pretty much like Duchamp's readymades. Looking at the work of the Russolos, we see this too, literally Noise music.
Of course, now we can take the principles of Musique Concrete and make much more melodic pieces with them. Hoccicio blurred the line quite well, with that album made by their sounds of, uh, togetherness.