Like, you don't think all the people in India or The Philippines or Chad need doctors or economic advancement?? It's just incredibly greedy and selfish. Can you imagine what a person who has just lost their child due to a preventable illness from being unable to see a doctor think when they hear some privileged person from an unimaginably wealthy country that already has an order of magnitude more doctors per capita and whose children will never see the suffering theirs routinely do -- boasting how wonderful it is that they are harvesting all the best healthcare workers from their country. Makes you shudder to think about it really.
These same people will bemoan a corporation from their country going to another one to conduct a resource extraction business (exploitation!) and yet when it comes to their own interests, they are quite happy to take and exploit a less well off country's most valuable resource which is its human capital.