Is there any evidence of him actually following up on any of those pledges? The example from the article about his "billion dollar" donation (of which only $4MM seemed to have actually been spent) makes me skeptical.

Edit: It appears the Hans Foundation is doing some things, at least if their annual report [1] is to be believed. Looking at the graphs at the end, their total budget was somewhere around $45MM USD for FY2022-2023 (but there are two graphs which seem to have different numbers, among other problems).

[1] https://thehansfoundation.org/wp-content/uploads/2023/12/THF...