The wild part isn't just that the compound is unknown, it's how specific the hallucination is. 96% of people see tiny figures, and there's a third-century Chinese text describing the same mushroom letting you "see a little person." That kind of consistency across centuries feels less like a random trip and more like it's reliably tripping some existing brain circuit.
Worth noting micropsia ("Alice in Wonderland syndrome") shows up in migraines and epilepsy too, so maybe the mushroom just hits a failure mode that's already wired in. Still, "evolved its own psychoactive pathway, and it's closer to porcini than to anything in Psilocybe" is a great sentence.