There are descent people that are pushed into homelessness, but one camper can turn to a dozen in less than a week and only one of them has to start threatening to hurt your family, breaking into vehicles or set a fire to turn a benign situation into one that can threaten your life or livelihood.
Speaking from personal experience, we turned a blind eye to a middle aged man living out of his car next to our garage for a few months. Then we woke up one night to find the van had erupted into a two story fireball that almost burned down our entire block.
I go out and talk to people now when they start forming an encampment in our neighborhood. Its incredibly difficult work and I have never had both more and less sympathy for their situations and the real threats encampments pose.
This is a complex issue but it is an issue that is the city's responsibility to address. Shame on them for putting people on both sides of this issue in impossible positions.
New York figured this out in 1979. Cities have a constitutional obligation to build shelters for everyone that needs them. They did.