I wonder what the modus operandi of preset makers is. Like, the "Boards of Casio" patch data here is amazing, usable, playable. But the official patch banks of many synths, VSTs etc. are quite unusable. Maybe they're aiming to show the breadth of what sounds you can get out of it, rather than provide good defaults?
Agreed. I was lucky and found both a CZ-1 and a VZ-10m at low cost in the late 90s/early 2000s. I'm happy to see people exploring their synthesis mechanism in a form with a better UI.