so my thoughts on tadc ep7 are essentially this: it was REALLY GOOD, and what i like the most about it is how it so effectively set up our expectations for this payoff, but didn't completely discount everything we've been picking up on. in the end, this episode wasn't about telling the fandom they were wrong about everything, it was about obfuscating the truth. and, to a lesser extent, forcing our protagonists to confront some big questions about themselves/each other.
obviously the show has been giving us bread crumbs about the larger theory on what's going on wrt the circus, who's behind its creation, if escape is possible and if so, how it can be managed, etc. this episode take our natural conclusions/guesstimations on those details and very effectively debunks them, but it only works as well as it does because the is truth in its foundations. now the question is how much was Caine's Amazing World-building vs the truth it was built off of
...thinking on it now, this also plays along with the Chinese Room concept. Caine was only able to create this "Adventure" and make it feel real enough for the others to believe because he must have enough reference material to work with. Caine "doesn't understand Chinese", claims not to know about the "macroverse" enough to "effectively recreate it", but apparently had enough material to work with in order to craft a believable story. he's the guy in the Chinese Room using what he has access to in order to try communicating with the members of the circus, but of course, he doesn't understand what he's doing in actuality: manipulating, lying, and traumatizing them for the sake of a Fun Adventure that's not actually fun for anyone at all.
so now the question is which parts of it WERE true. it's easy to throw out all evidence and claim it was all just part of Caine's game, but he had to base his choices off of something, or else the adventure never would've been enough to convince anyone