Find me another example of a social safety net program that reduced its cost by 50% in one year, by lifting its recipients out of the qualifications for said welfare.
Have to be careful with how you look at those numbers. It was already the case that most people who are homeless are not "chronically homeless".
I don't doubt that there was some degree of reduction but if you are looking at it as a "50% cure rate" or something like that, you shouldn't be claiming things like "fact" or "success/failure" regarding the topic, without at least adding some more context.
https://www.denverbasicincomeproject.org/research