The Wacky Shackie was living in a shack with a dead dog carcass. Now he's either completely insane, which would explain why he's spouting on about calling the cops, or he's been completely cut off from society, but neither of those things suggest he is not familiar & capable in dealing with Walkers. He seemed to grasp the concept when the subject was brought up. I tend to think he was just nuts, the fact he had the stench of death around him was probably enough to keep the walkers somewhat at bay. We don't know anything about him other than that. So yeah, I can buy his existence, a year into the ZA without too much fuss
As the dog carcass decomposed, the initial stench will lose its pungent nature--and that alone would not keep walkers away (since the series only had the odor of human remains disguising the smell of the living). By the time Rick's group found him, the ZA was well over a year old, so he would need to leave his shack to get some sort of supplies, as it was clear his place was more junk than necessity.
. It's thin, but not altogether completely beyond belief.
Very thin.
Shut-ins are a valid aspect to the show, even if we are getting long into the time frame. It's not like every new person is like that. The prison had shut-ins.
The inmates had no choice--they were locked in, so they have the best excuse of all.
Tara was a shut-in.
But they were fully aware of walkers, and were armed--and we have to assume it ws due to the new, dominant population.
Hershel's whole family were shut-ins.
Hershel's family collected walkers. They understood the danger, learned enough to know how local society had fallen (Otis' statements), and knew bites can lead to death/reanimation (again, Hershel's question about Carl). They were not in downtown Atlanta, but there were experienced with walkers.
People inside Woodbury & Slabtown & Terminus. It's been consistent throughout the show. Some people have gotten by without being hardened executioners. Seems petty to start objecting now. It hasn't been too long since these other occurrences.
Woodbury was an armed camp, and understood the reasons why that was necessary. They also were familiar enough to enjoy walkers as a spectator sport. That is not the profile of shut-ins.
The Terminus group not only knew how to handle walkers, but devised a means to distract them (fireworks). True shut ins would not have such a system in use.
Abe's not stupid. He's blind & desperate. He's actually been smart enough to organize the entire party that's kept Eugene alive this whole time. His gullibility is explained in this week's episode, but there's no equivalent reason for any of our regulars to be that gullible & unquestioning anymore, not when they grill almost everybody now. They ARE hardened executioners & survivors. We've watched it happen
Then I guess the producers have some explaining to do about Maggie & Glenn buying into the Eugene campaign right up to the last five minutes of the recent episode.