Earlier quoted context omitted.
One of the downsides of people knowing you have money is everyone on earth will judge you for what you do with it. I say let them enjoy it. If you must pressure someone to donate, pressure one of the "usual billionaires" who's funding their torment nexus with it.
There is no human alive who can ethically enjoy a billion dollars. Give them each a hundred million and say, you've hit your cap, everything else goes towards the public good. A hundred million dollars buys you a life of comfort and luxury. Anyone with a billion has too much influence, imo.
If you make them cut their assets down to $100 million each then they don't own South Park. And someone else gets to tell them what to write. Or they retire.