Everything else aside, this is a really stupid comparison. A multi-billionaire giving away even 99% of their billions of dollars is not the same as any normal person giving away a substantially smaller percentage of their money. Thiel can give away 99% of his money and would still have hundreds of millions of dollars left, which is already quite literally more money than any normal person can spend in their entire lifetime. Even at only 3% interest, he would get more interest money alone per year than the income of almost anyone on the planet.