AI is the interpolation of the human corpus. Is it suprising AI recombines sucessfully where human attention has not explored all plausible solutions? N,o not especially. The key fallacy is that AI is other than human. This is really no different from computer proofs, e.g. 4 color theorem. The fact the prompt is not linked to the solution by individual human intention alone does not make the solution less human in origin.
"AI recombines successfully" is a phrase that makes me think of the human corpus as a genome and a particular AI response as a child of the parent prompt, with the thinking a model does in response to the prompt basically being a form of information sex.