There was a post (on Reddit I think, so take it with a grain of salt) - someone mentioned they paid $300 to a student loan, out of which only $68 went to the principal, everything else went to the interest. Kinda looks high, but I haven't had a student loan, so not sure. I have seen many similar posts though.

So yeah, it would be a better use of the money to work on the root cause of the problems. It is also a bad idea to depend on the largesse of the ultra wealthy, for issues like this - just how many people can they help, and for how long? If the article is correct (It's one thing to say you've donated a quarter of your wealth, but a whole other thing to say you've donated 0.27% of your money.) then it even looks like a PR stunt than a genuine desire to help