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”?
I’m a typical white guy, so my opinion on this doesn’t really matter.
But for what its worth, I’ve lived in Japan, a and I personally never met any English-speaking Japanese people who were offended by the term “rice burner,” or “ricing.” For the most part they don’t seem to care about their tech being associated with rice.
Standard disclaimer: my observation may not apply to everyone in that group.