I think this is a very interesting discussion. I totally agree that culture is not fixed and I really don't like this idea of ‘preserving’ folk music as if it were something solid, stuck in time. Each music is an evolution, the meeting of worlds and changes. It makes perfect sense that different influences come together to mix electronic music with folk sounds.
How was cumbia born? Would you class a charango as a traditional instrument, or can it only be stone flutes? Music is not fixed, it is fluid. Having said that, to me, it is important to understand what you are remixing, understand where it comes from, and what it means. It does frustrate me these days to see music that is just like, search for Icaro Shaman Chant, download it from a Youtube video, put it over a 4x4 beat at 100bpm, and there you go, ‘ethnic-slow-house’. I have been guilty of this before for sure, but now I really try to dig deeper, to make connections with people and work with them – like on the album – or to edit or remix songs that tell a story to me, that inspire me or that mean something through their lyrics or melody.