What happens if your long term neighbors are drunk idiots? I fail to see how term length is relevant since it's not like neighbors vet new long term tenants for alcoholism and IQ.
Sure, a worst case long term neighbor can be worse, but the average case long term renter is more desirable to most people.
I am willingly living next to resort rentals, I knew it when I moved in. Having it foisted on mw would not be the same. And yes, people can generally do what they want within the confines of their property, it's the shared space or spilling in to neighbor's space that is an issue.
Anyway, constructive criticism, how to prevent such self-destruction? Boarding schools for ghetto children, to avoid prolonged contact with negative examples and behavior?
Obviously, these solutions are not very palatable to most people. If you want solutions which aren't severe human-rights violations, there really aren't any, except subtle, long-term things such as maybe taking control of popular media and using it to slowly indoctrinate the population into "desirable" behaviors and values.
https://en.wikipedia.org/wiki/Stolen_Generations
Boarding schools would have to be voluntarily.
I don't know how you reach people like that. It isn't the majority of them also. Is it mental illness? Addiction? I don't know. Often they come from a long line of people who behave the exact same way. Cops around here jokingly profile on last name, "Oh, your Franks son? We'll be keeping an eye on you" and to be honest I can't really blame them.
The best solution I have is simply provide a better ladder of opportunity for everyone. If people feel that they can advance in the world, they might actually attempt to do so.