So much of our fundamental scientific progress has been made by people who were considered crazy and their ideas delusional. Even mundane software engineering is done with layers of code review and automated tests because even the best engineers are still pretty bad at it. At a larger level, humanity itself seems to largely operate more like an ensemble method where many people in parallel solve problems and we empirically find who was "hallucinating".
Which is just to say, it feels to me like there's a danger that the stochastic nature of outputs is fundamental to true creative intelligence and all attempts to stamp it out will result in lower accuracy overall. Rather we should be treating it more like we do actual humans and expect errors and put layers of process around things where it matters to make them safe.