There are DEFINITELY combinations of successive chords that, if all notes comprising each chord are played, require repositioning your whole hand to play the progression. However, when the same progression is played using "intelligent" chords (triggering major chords with one note), it can be played WITHOUT repositioning your hand. I find this particularly true when the progression contains slash chords requiring a specific bass note.

My issue (which I don't think you share) is that I play a lot of music originally written for organ. The chord and bass change on almost every beat. There are also frequent changes in time signature, so I play with sync stop enabled. The accompaniment sounds decay rapidly, so I can't just "stab and move" like a typical arranger player would; I have to be smooth, quick, and accurate. The only other way to play without hand jumps would be to use an actual organ with bass pedals. And that would take even more training and skill!

I'm NOT the only person complaining. I've seen posts on PSRTutorial and the Korg Forums by folks who acquired a Yamaha and were disappointed and frustrated by the same issue. Just because Yamaha has more marketing muscle, that doesn't make their system better. As I've stated before, Roland was first in this space. Yamaha may have compromised to avoid patent infringement. Simplified chord systems have been around since the '80s, at least. Every brand has now adopted the basic "single finger" system, i.e., nearest black key to the left triggers a minor chord, etc. That system isn't musical or logical but I suppose it's easy for non-musicians to remember. It has proliferated and become a quasi-standard. The Roland / GEM / Casio intelligent system is much better; it too should be promulgated to every MIDI keyboard controller, DAW software, etc.

You can advocate for the discipline of learning archery and muzzle loaders if you want. I have a pristine RA-800 stored safely in a Faraday cage; the great skill equalizer--a musical automatic weapon! I'm pretty sure it'll be the last functional arranger on the planet. When the world ends due to the next Carrington event, I'll be banging away "Nearer my God to Thee" with one-finger chords :-)