Why Ethiopia is not the voice of Africa

M G Zimeta writes in Prospect that Ethiopia:

...gets a disproportionately large slice of Africa's aid, but the Ethiopian regime does not act in the best interests of its citizens or its neighbours. So why has the G20 made the country a spokesman for the entire continent?

...refusal to think long term, or to recognise the diversity of Africa, they are doing the continent great disservice. Instead of indulging in tokenism, they could be drawing more on success stories like Ghana, Botswana, Senegal, Namibia and Tanzania—and we could all be learning more from what actually works.
As for Ethiopia’s citizens, whose iconic suffering seems to be what has earned their prime minister the right to be the “voice of Africa”—their suffering continues.