I don't really think all that much about somebody who is fantastically rich giving away money that they won't miss. Although it's still somewhat cool because other fantastically rich people wouldn't do this and seem more concerned with increasing their own wealth to an obscene amount.
Now there's a backhanded compliment! Dude, it doesn't matter how rich he is. He gave away his own money to the people who are making him rich as a gesture of thanks and goodwill. WTF would you find anything to belittle that?
I'd be more impressed by somebody who is living check-to-check donating $10 to a good cause.