Because most 'AI ethicists' are overeducated well off urbanite upper-middle class landed gentry-adjacents who believe they will never be replaced by AI because the touchstones of their distributed cognitive-emotional load are too complex for even far off SOTA models to ever grasp. The fate of the poor simple proles and their millions destitute are a non-issue to them. AI bots saying mean things on Twitter is a far greater crisis because it pertains to what they actually care about, not the lives of millions of people less fortunate than them.