This has sort of been said, but this really isn't true. The type of homelessness solved by building more housing is people living out of weekly rentals, hotels,

This has sort of been said, but this really isn't true. The type of homelessness solved by building more housing is people living out of weekly rentals, hotels, couch-surfing with their friends, or staying with their parents forever. They're not the kind of people cities are trying to bus away. The kind of people cities are trying to bus away are walking the streets screaming at imagined ghosts. Some small number may have jobs and money but just not enough to afford housing and no friends or family to turn to, but some are functionally incapable of operating in normal society. A humane community needs some solution to what to do with these people as well, aside from send them somewhere else, put them in prison, and/or hope they die.