@DRDMovieMusings said:

Why people haven't started forest fires to wipe them out, or occupied an island off the coast of the mainland, or just created a moat of cut-down trees around their communities (extending their sight lines while creating sufficient physical barriers to impede the walkers ground speed), baffles me...BUT, I also recognize that doing so might have meant less compelling television drama for us viewers.

The lesson you should have taken from those considerations is that these are elements that would never have been introduced into a competently written series in the first place. If zombies walk right into fire (instead of, as in the Romero flicks, avoiding it like animals), getting rid of them is comically easy. It's also worth noting that TWD's zombies didn't walk into fire until pretty late in the game; that was a major change in the rules. They also demonstrated the power of teleportation on many occasions, an aspect of zombie-ism that remains unexplored on the show (except to show it over and over again). I've suggested the Saviors' use of magic could have been partially a result of experimentation on zombies--unlock those zombie secrets!

YES season 2 on Hershal;s farm when the barn caught fire the walkers would not go near it.

Yeah, but I wasn't requiring that zombies walk into fires. If they set fires it soulful kill zombies the way it kills people and animals who also don't walk into them.