Civilization is exactly about imposing a philosophy on how people should live. Like it or not, that's how it works. If you don't want to play ball, there are plenty of open spaces in the US where people can live off the land without creating a public health hazard.

If people don't want to be homeless, we should do everything in our power to help them get into housing, sustainably. But if they do? No thanks, do that somewhere else, where the land can be reasonably and cost-effectively set up to support that. One of the most expensive, highly-regulated real estate markets in the US is not that place.