Giving these individual examples, anecdotes really, is even more simplistic in a sense. Within just about any social phenomenon, you can find examples of practices/effects that are incongruent, or even opposite, to the “main gist” of the phenomenon itself. It's really not about what any particular individual does at some particular time, it's about the collective effect a certain social group.
Of course, having the state of affairs as we currently have it, B&MGF's efforts are certainly to be saluted, but that doesn't mean we shouldn't contemplate and work towards a world where you don't need to depend on the good will of a billionaire to have a chance of people not dying of various preventable diseases; Or, indeed, even to recognize that such a state of affairs is unacceptable.
Of course, having the state of affairs as we currently have it, B&MGF's efforts are certainly to be saluted, but that doesn't mean we shouldn't contemplate and work towards a world where you don't need to depend on the good will of a billionaire to have a chance of people not dying of various preventable diseases; Or, indeed, even to recognize that such a state of affairs is unacceptable.