Who cares? ....that's why you have the choice of the two styles of units,.... arranger or workstation..simple as that.
There so many OTHER things in the music business that DON'T use styles at all, this is where a Workstation shines, Motion picture scores, commercials, sound effects, television shows, etc, etc, etc, and on & on all using Synth/Workstations. Having one of each is the perfect combination IMO to create music of all kinds.