The issue I always had with episodes like The Apple is that no one ever discusses that maybe the way of life there was originally chosen by the people. Someone built Vaal. Was it because their civilization was violent and self-destructive, so they built this machine to take care of them so they're not give into their baser natures, much like the Vulcans embracing logic? Furthermore, it is implied that it was Vaal's power which made the planet lush, and without that influence what happens to the climate?
These are some of the episode's failings, along with the unanswered questions of if there are other villages and populations, and what influence did Vaal have on them?