They do spell it out:

Money alone will not be enough, he added. It is difficult for relief workers to get through lockdowns around the world and set up air bridges when transport is paralysed. “We need money and access – not one or the other, both.”

Also crucial is ensuring that supply chains stay open in the face of lockdowns and the difficulty of getting workers into the fields to tend crops if they are sick or unable to travel easily. “If the supply chain breaks down, people can’t get food – and if they can’t get food for long enough, they will die,” said Beasley.

I don't understand it either.