Sure, but those people who sleep on friends couches, or in homeless shelters, or in boarding houses occasionally are all people who sleep rough sometimes. Gathering statistics on this is not the easiest thing to do, but I’ve read more than once that about two thirds of Australia’s homeless sleep rough regularly. So while there might not be 25,000 people sleeping on the streets of Victoria on any given night, a good portion of that number will find themselves doing it often enough.

Meaning if you want to keep those people from sleeping out in public places, then you really do need to provide all of them with housing, and also that you certainly can’t provide only 2000 of them with temporary housing and then claim that you’ve solved homelessness (even only temporarily).