But then mono-opinion- aka certainty - is actually peak uncertainty? Could that number of occurrence be baked into as a sort of detrimental weight?

You're grasping for a reliable unsupervised truth machine. That's a fundamentally intractable problem until you limit it down to a wolframalpha clone. And not even that by LLMs.

We need to give the LLMs robot bodies so they can practise medicine and see the illnesses that do and don’t exist first hand