It doesn’t force cities to do anything. It just tells people living on the street they’re not allowed to be anywhere. It ignores that they have no desire to be there and have nowhere to go.

It’s like “no urinating in public.” Cities are not obligated to provide a reasonable number of public restrooms per some set area. In fact they’re not obligated to have any, typically. They simply punish people and then shrug when you bring up biological necessity.