This is a problem all over the country. But a way to alleviate it is to create “sanctuary towns”. These are basically “minimum security” rural towns where older parolees can be allowed to live out their lives.
The security is to keep outsiders out. Between welfare and charity, their needs are met, and they can tend gardens to provide themselves fresh foods and vegetables. Eventually they might even husband chickens and pigs.
The level of technology is reduced to minimal, and the town is run by an administrator.
The bottom line to this is that it is a lot cheaper than trying to force them to integrate back into society. It keeps them away from vices and out of harms way for the rest of their lives.