The fact that the survivors are constantly on the move (walking) to a safe haven that likely does not exist is symbolism in itself given the title. Naming their most recent destination Terminus only solidifies that symbolism. Terminus literally means the end of the line. Ever since Final Destination came out, phrases like that have been suspect. Since The Walking Dead sits firmly in the horror genre, the writers are aware of this. At this point in the show's history it would be more of a twist if Terminus was an actual paradise instead of a trap set by cannibals, crazies, power hungry jerks, or a place just about to get over run by zombies. Either way, the symbolism of everyone wandering around lost on railroad tracks in search of the end cannot be overlooked.