on the one hand, it's really frustrating because it seems like his life could be greatly improved if he could be forced to undergo long term treatment. he might even be grateful on the other side. but on the other hand, living in a putatively free society, is there a point where you just have to take someone at their word that they don't want to do something? he doesn't seem to be hurting anyone but himself, and he claims to be happy.
There would probably be a person on the other side who would be grateful, but it's far from obvious that that would be the same person as the one you forced into long term treatment. It's a good thing that our society makes it this hard to involuntarily commit people, and as cco mentions, it would be nice if we could extend this to other kinds of forcible confinement.
The reaction to unacceptable conditions was correct and justifiable, but we've thrown the baby with the bathwater in the sense that now, mentally handicapped people are homeless all over the place...