At worst this sounds like an awful scam. At best this is terribly insensitive way to help the homeless.
How arrogant of you to drop money from the sky over homeless people or poor areas. You don't have any respect for those you help.
I'm starting to think now that maybe dropping money isn't the best option. They could be dropping other stuff, like food as Equinoxx shared in that video. Or clothes. Just a thought.