While it's true that people are naturally predisposed to invent the "secret quantizing" conspiracy regardless of whether the actual conspiracy exists or not, I think there's more to the story.

I've seen Sonnet consistently start hallucinating on the exact same inputs for a couple hours, and then just go back to normal like nothing ever happened. It may just be a combination of hardware malfunction + session pinning. But at the end of the day the effects are indistinguishable from "secret quantizing".