As an east Asian that eats rice every day, I must say that I don’t consider this term racist at all. The meanings of words shift over time. For example, nice used to mean “foolish, ignorant, frivolous, senseless,” but now it means “kind, thoughtful.” Gay used to mean “lighthearted, joyous,” then a slang for homosexuals, and ultimately became the term with which many homosexuals choose to describe themselves. Rice may have been a racist term, but now what it means is “to extensively customize one’s desktop system to one’s liking, especially Linux systems.” It no longer is racist.