Ctrl/CMD + Z vs u Ctrl/CMD + Y vs r There’s a significant difference in speed. But more importantly, the former requires RSI inducing finger gymnastics, where

Ctrl/CMD + Z vs u Ctrl/CMD + Y vs r There’s a significant difference in speed. But more importantly, the former requires RSI inducing finger gymnastics, whereas the latter is a tap of a fingertip. The much faster speed but more importantly less complicated chords/key taps in VIM, leads to a qualitatively different editing/reading experience.