Acceptance? If he's clean, groomed, not bothering people, and OK with is life as it is, maybe there is room for him in society.
I think a lot of the problem stems from the fact that we all agree that "the homeless problem" should be solved, but we can't agree on what "the problem" is.
To some it's "I don't want to see and be bothered by homeless people"to others its "people are suffering needlessly" to others its "a wealthy nation like ours should be able to provide shelter to everyone" to others its some combination.
It's rare to hear a political plan to "solve homelessness" that addresses the people who want to be homeless.