I felt this one worked more on atmosphere than on plot coherence, though perhaps I've missed bits. It did a really good job of keeping the kid as an unreliable narrator, and ratcheting up the tension without ever crossing into being over the top. But I really couldn't figure out what the parents were actually trying to achieve here, especially the father. Even more so when it seemed that whatever was going on, was going on with a lot of other families.
Was the boy always telepathic and subtly controlling the people around him, or is that a power he acquires because of his connection to the creatures? Was the father's endgame that he thought he'd end up in control of the creatures once he sacrifices the kid to them? Was he trying to destroy the creatures and somehow that involved raising them? Why would he give the responsibility of raising them to his kid - regardless of whether either explanation is correct (or if neither of them is) - especially when the ending implies that that wasn't something everyone in the club did?
To be honest, the feeling I got after this story was over was that the questions above are not answerable, because the goal was to play with the themes rather than proper worldbuilding. Compare this to the superlative "Passing Grade" in Flash on the Borderlands XVI - another story about a kid and monsters, but one where, as unrealistic as the world was, it made perfect sense. Which meant that that story stayed with me for a couple of months now, while this one, effective as it was while I was listening to it, is already fading from my memory a couple of days after I listened to it.