Aren't studies like this part of how to solve homelessness, though? Like this method helps around 16%, then other methods can be used to help people who need more resources.
Part of the frustration with dealing with homelessness is that it's so difficult to help the most visibly homeless, so people think the programs aren't working or are lining people's pockets.
AI needs constant data to stay up to date, so i think it's still worth it.
Personally I've found a happy medium between total privacy and convenience.