Philanthropy is a pr scam for billionaires.

It let's them doge taxes while feeling like they are doing good in the world, while using their money to cause more problems. That article is about Gates screwing up education systems while trying to 'fix' them, because he has billions of dollars while the people who actually have a clue on how to fix things do not. Look into the other actions his foundation takes and you will see similar patterns, from funding destructive agriculture to sourcing their funds from private prisons.

For the claim that Buffett is doing any good to the world, in his own words:

"There's class warfare, all right, but it's my class, the rich class, that's making war, and we're winning."