Earlier quoted context omitted.
I'm not arguing that Elon doesn't put his money to use publicly, but I'm interested how you think he does. Do you mean he uses his wealth privately in a way that benefits the public, and/or he does it in public view?
Musk has a track record of working on what he considers (among) the most important problems, and he supposedly set that course in college.
The space stuff looked interesting until he started sending all kinds of things into space to become an ISP, polluting space the same way Tesla pollutes the earth.
The real issues are still here: poverty, lack of access to clean water, etc. How does Musk fix that?