It was one thing to believe that the generations of power-mad telekinetic royals had created all manner of beasts out of boredom. Or rampaging karma demons. It was another that many of the creatures are just the fabrication of modern and controlled cantus users' subconscious thoughts leaking out over generations

I agree that the false minoshiro was created by scientists as a living library. Shun was talking about the regular minoshiros. The ones that rattle their back crystal-spines as they walk.