They also mention that the majority of homeless aren’t that. So this is a nuanced story I think. We may be able to help the majority of the homeless simply by giving them money and/or housing. But for the ones suffering from addiction, mental illness, or entrenched homeless, this won’t be a magic bullet. It will probably take drug and mental health counciling. It probably won’t completely get rid of homeless, and the ones it won’t help are the most visible and most problematic.
But we can’t let perfect be the enemy of good. And we already know our current approach is not even to the level of good.