I knew you were joking, but it's
metaphorically true.
It's like the "lizard people" thing. Obviously the super-wealthy are not lizard people from another planet, but the kooky conspiracy rings true to people because it expresses something that is true -- that once you reach a certain level of wealth and power you don't really share experiences in common with ordinary people, you might as well be another species.
What Gates has done through the World Health Organization, putting himself in a position where he's deciding the health policies of entire nations in sub-saharan africa, of nearly single-handedly stopping the TRIPS wavier, thereby protecting intellectual property at the expense of other nations being able to manufacture vaccines, he might as well be having a few of them as a snack.