I'm wondering if there's something preventing the government of vulnerable countries from buying futures themselves to shield their own people from violent price fluctuations like these, i.e. hedge against price increase for food commodities that need to be imported. Trading commodity futures may be inaccessible to ordinary people, but I don't see why the government of a country, even a developing one, cannot do it,…
But maybe your point is that by doing this they would avoid the transient price spike due to the indexes rolling over in the near months. Which might make sense, but that phenomenon was noticed by traders anyway and you would expect it to be smoothed out because of that.