I think he is just a rich guy with money to burn.
If you go to his web page there is no mention of charity. If his bio is true (big if) he seems to have had a successful career which has financed his hobby. Significantly there is no 'GoFundMe' link or 'Donate' link, so he is not asking for free money.
He does offer his services as a motivational speaker etc. but at least that requires him to work for his pay. If he is no good at that then word will quickly get round. Mind you I think it would be a good idea to loose the Taliban beard if he wants to get speaking engagements.
It's the usual dilemma, we want a society where people can earn lots of money and spend it as they wish, but then are envious when someone is successful and achieves something we can only fantasize about.
https://www.eternalendurance.com/