Subtoot: Just because a billionaire does a few decent things doesn't make them "a basically good human being".
The very act of sitting on a horde of wealth that is as to your actual needs or even the needs of your children as the contents of the Milky Way galaxy is to the size of the Earth's moon is a depraved crime in and of itself.
And that's not even touching the crimes they committed to steal that wealth in the first place.