I feel like they ducked the supernatural direction the show was starting to swerve toward.
"It's time, isn't it? The black stars. Black stars rise. I know what happens next. I saw you in my dream. You're in Carcosa now. With me. He sees you. You'll do this again. Time is a flat circle."
What supernatural? It's just him saying that Rust hasn't stopped anything, the murders will continue, and Rust will be drawn back into it inevitably. He phrases it like some it's some magic ritual because he's a crazy occultist.
Knowing the outcome, the show's implications of supernatural mystery seem like cheap misdirection. What was the point of all that mythology? To give a more or less conventional murder case some theatrical savor? What a letdown.
To continue the thought in my earlier post, Rust's nihilism was fascinating. The show burned his most interesting trait at the altar of feel-good vibes. It felt like a condescending pat on the back for the audience. "Don't worry, the meanie nihilist who made fun of religion doesn't really feel that way in the end."
But he never
really felt that way in the beginning either. Rust's nihilistic worldview was always just a coping mechanism for dealing with the death of his daughter and the disintegration of his family, and I think people called this from the very beginning (or at least, I know I did :lol).
The point of his monologues isn't that Rust is right, but that he's not all that different from the people he criticizes for believing the exact opposite: that these belief sets are just justifications for your own behavior. Rust doesn't have to do anything to improve his own life as long as he keeps clinging to the idea that none of it matters anyway. His come to Jesus moment at the end isn't about "Rust found religion, the afterlife is real, praise the lord!" but that he actually
has to do something constructive with his life now. Being a nihilist is fine, but using nihilism to deny yourself an actual life isn't, and that's what Rust is confronted with at the end.
Just because the final message of the show isn't "There's no meaning to anything, now despair" doesn't mean there was no follow through on the story's themes or Rust's characterization.