I honestly disagree.
In my S&B neighborhood, we have had a guy living in his TC for a couple of years. He moves around, within about a two block radius. He parks in front of vacant lots or other places where he is in no one's way. As a property owner, I have no worries. He is a nice guy, and no trouble.
There is a separate issue of poverty and disability in this country. My hometown has a large homeless population, due to the desireable social climate -- many churches and other volunteer organisations help people.
Other than charity, we have virtually nothing in this country for people who are severy disabled and too young for medicare.
'Disability checks' are not enough to live in a house in most states. People live in the street, or in broken down units in the sort of super-run-down rv parks that get bad reviews online. Tarps on the roof, no working water system, we have all seen them.
And yes, many people in s&b's fear having such poverty near their houses. We prefer 'out of sight, out of mind'.