Simply: fewer keys means less travel for your wrists and fingers, albeit (as someone mentioned) at the cost of a steeper learning curve in order to master the layer-switching and dual-use keys that you need to make such a small keyboard work. Germ, designer of the Gergo split-ergo keyboard that I currently use at home, has a good post on it here: https://blog.gboards.ca/2019/11/on-gergoplex-and-updates-let...