The funny thing is most foreign aid projects are implemented by American contracting companies. A very large percentage of the money stays in the US and employs Americans. Look up DAI, Chemonics, Abt Associates, Creative Associates, TetraTech, etc. Most of these companies will go bankrupt because of these actions. In the case of Chemonics, they run a project to distribute HIV and malaria medication to millions around the world. These people will lose their medication. They also run a program to detect famine in Africa, South America, and parts of Asia https://en.m.wikipedia.org/wiki/Famine_Early_Warning_Systems_Network
To make it worse, we spend almost nothing on it. They are saving pennies:
The U.S. is the world’s largest donor of humanitarian aid by far. It spends less than 1 percent of its budget on foreign assistance, a smaller share overall than some other countries.
Elon Musk pushes the lie that truly homeless people don't exist. That essentially it's a choice and we should feel no empathy for them. Add to that his well-documented history of racism and weird eugenicist beliefs about IQ and superior genes that need to survive, you start to get the picture for why he thinks taking food and medicine away from the most deprived people on the planet is a priority for the US government.