Counterpoint:
At the beginning, we only knew that workers were being "rebellious"
We discovered the haze and its effects on jade and the workers
We discovered that the PC is especially susceptible to the effects of said haze
We now know how the demon is leveraging emotion to weaken its prey
We discovered a ley-line power source that is potentially a solution toward the energy problem, but also a source of healing for the demon
This is a multi-part story, so we weren't going to answer all the questions in one go.
All that stated, though, I totally hear you. There were elements that fell flat for you (or just weren't enough). I appreciate you sharing that with us.