The Wikipedia definition seems to indicate it has origins as a racist term and I’ve never understood why unix users have adopted this terms instead of something benign like “themes” or “theming” which I remember being in use long before I ever heard “rice”. So what gives? Why use “rice” instead of “theme”?
Nah, seems to be a different meaning, and I think it probably has to do with dot files as other comments have mentioned. Also rice burner and other terms seems to have been used directly in conjunction with Asians, to insult products made by them or the people themselves. As Unix is not really a Asian product so to speak, I doubt they’re related too much, and if so only tangentially.