To rule out coincidence you need to replicate what happened. If it works again and again, then yes, some app is listening.

The billionaires. There are many reasons, but my favorite is the Matthew effect.

To be fair - there are also homeless people who never did drugs or drank (or gambled and so on) in the first place. Because of that they actually don't qualify for any of those programs.

A community for homeless people.

Protein is always a good choice because that's what you get the least in shelters and it's also the most important (aside from water of course).

I tell them I'm homeless myself and wish them good luck.