Actually, that's a bad analogy, because there's a lot of positive nutrition in the grass-fed butter we eat. CLA, K2, omega-3's. I'm not saying white rice is the devil, but it can't compare nutritionally to good butter.
Now if someone's eating so much butter that it's displacing more nutritious foods from their diet, it could become a problem for sure. But a paper-thin slice of Kerrygold here and there is a satiating indulgence and your constant railing against it is really unfounded in fact or logic.