I may just be imagining things, but it seems a disproportionate number of RSI-suffering programmers use emacs. From my own experience, I suffered the worst RSI of my life while using vim. It subsided a bit when I moved to Sublime and almost completely went away from I switched to VS Code. Obviously correlation does not imply causation and I have taken a number of other steps to fight RSI (ergo keyboard, heavy keyboard remapping) throughout the years.