Yea the fox AI is accessing basically a mesh or a graph and then the algorithm with the heuristic finds a local minima (or is it a maxima )?
I.e. a fox can be leading you to a high-triangle-density area (aka treasure), or it can simply be leading you away if no treasure is about
And so players no doubt observed both of these outcomes... and hence the debate! And thus the nuances of the behavior somehow make it more magical than "fox always leads to treasure" simplicity.
So in a way, the inconsistency might've pulled more people in.