Presumably the people in tents are not choosing "I want to camp in an urban environment", but rather "I don't want to run on the financial treadmill" [0]. As that makes them useless to the financial treadmill, it is setup so they fall off the back hard and serve as an example to everybody else to keep running.
[0] That is to say, to the extent that the houseless can actually be considered making a choice, or at least having made that choice in the past and are now stuck on that path.
[0] That is to say, to the extent that the houseless can actually be considered making a choice, or at least having made that choice in the past and are now stuck on that path.