When you start out being obviously indigent and from elsewhere, you have two strikes against you. You cannot afford to incite the folks who live in a town against you, and need to be conspicuously well behaved and upright to avoid trouble.
Most of those rules are about either solidarity within the community, or how not to be a pain in a town's arse.
Removing obvious reasons for 'cleaning out dogtown' (or whatever name the local hobo jungle goes by), makes it more likely that the police, the local sheriff, and the yard bulls will leave the community be.
That transients would consider the effect their presence now will have on others later is simply the Golden Rule once removed. Treat others as you would want the next guy to be treated--because tomorrow, down the line, you will be the next guy.
Some of these people were from decent families, fallen on hard times, and some were there because they liked the life.
True. A great tune by Don McLean about this topic.https://www.youtube.com/watch?v=InxDB7PHykQ