We should not get out of the poorest countries. They are our members, they do not want us to get out, and if we value the fact that this is a global institution we should not want them to get out either. There is not a different macroeconomics for poor countries than for middle income and emerging market countries. Inflation is bad for the poor, everywhere. That's a macroeconomic phenomenon.
Macroeconomic instability is bad for everyone everywhere.
That is why we should remain in these countries. But we cannot do that in a way that ignores the fact that poverty is the main problem confronting those countries, and that there must be massive efforts, spearheaded by the World Bank, to reduce poverty in these countries.