Lube or dry has had some debate over the years. I would think that a number of bicycle fasteners are dissimilar materials from the the component/frame and lube or anti-seize should be used.

I’m guessing that for a bicycle the torque range is for lubrucated/anti-sieze installation; although I’m not certain.

Personally, I use light coat/dab of Phil’s grease, or anti-seize if specified, on threads. I have not had a problem so far torquing to within the range.

John