I'm ok if the Atmos effect is derived via that description. That's as expected.
The base 5.1 mix better be discrete though...
It seems rather strange to me that they'd use the stereo remix as the base for the Atmos mix instead of the 5.1, but I think what they're actually going for a Monster Music-type release with two distinct surround mixes: the Atmos will be a more conservative/room-filling experience, while the standard 5.1 will be more active/discrete (like last year's White Album 5.1). Hopefully the final results will please everyone