Pretty clear you didn't read the thing. The guy just pledged to give away 45 Billion dollars to try and improve humanity in various ways. Seems like a pretty expensive 'PR stunt'.
The PR stunt is making this public under the guise of a supposed letter to his child, he could have done all this without the media fuss.
Thanks for the kind attempt to reframe the discussion by putting me in the spotlight but what I do with my life has nothing to do with the current matter nor with my legibility to contribute to the discussion.