There's no point criticizing him, it's obvious nobody would hire him until he "pulls himself out of the hole". But if you live near him and have some spare time / expertise / willingness to help, be a decent human being and help him get to someone that could help or hire him.
Most of are are not as "autonomous" as we think we are, and in unfavorable circumstances, we can all fall off the tracks. And get over the "but don't know the value of maintaining a basic financial safety net"... it's obvious that he already lost the "social safety net" of friends that could have told him this and probably a "psychological balance safety net" too, so it's a bit too late to be any point in telling him this...
His linkedin profile doesn't say or at least I couldn't see his job profile. I would imagine it is going to be hard for him to get a job as a coder (with his reputation and all). Even if he does manage to raise $1600, that only helps him extend his current situation until next month.
He said he's been living in some sort of isoloation ("platonic hermit monk") for the past decade. Maybe a job in a different field may help him give a different perspective from the one he's had for the past decade?
What does one do if they become homeless in the Bay Area?