>They've admitted the US education work was a mistake. They are hardly alone in making that mistake, improving education in the US is hard.

It's only hard if you don't want to help anyone and your only goal is to push charter schools(by any other name) by any means necessary.

>Their work to clean water and cure diseases has saved millions of lives. They know what they are good at and they've decided to double down on that.

They helped so many people by not allowing them getting covid vaccine or by fighting generics? Also their "good" deeds weren't without negative consequences that could be avoided if someone actually listened to people they were "helping".