This could be more accurately phrased as "I believe Elon Musk will do more good for mankind with my money than any organization that would qualify as 'charity.'

This could be more accurately phrased as "I believe Elon Musk will do more good for mankind with my money than any organization that would qualify as 'charity.'" NOTE: He may actually not mean that, but that is how I understood what he said, assuming by context that he is speaking about what will do the most good.