Thats exactly what i think about the STEMS format. A few years ago Traktors ‘Remix Decks and Remix Sets’ were being pushed as the new format and I see this as another, more basic, interpretation of that.
The problem is that music is made to sound a certain way. Breaking that music down into parts is all well and good but when you add all the parts back together, they don’t sound the same as the original ! This was one of the failings of Remix Sets, and has already been confirmed in reviews of STEMS.