If criminal justice was actually about getting people the help they need rather than doing time, that'd be totally different.
What do you do in cases like that if prison is off the table?
I didn't watch the video mostly because I don't know what it contains and I have kids around. Making the assumption that it's about people who want to be homeless, honestly that's fine. There's nothing inherently wrong about being homeless if that's what you want. The problem is people causing public health issues because they defecate in public areas, tear apart trash bins, or cause other issues like attacking other people... none of which is acceptable to society. These people may not want to be part of society, but they are living where society exists.
The video explores the visibly-homeless issue in Seattle, as well as a program to address the problem that was implemented in Rhode Island (specifically, enforcement + long-term treatment). I found it worth the watch.