Earth to Jose... HELLLOOO... those individuals get special training and
are licensed to perform aircraft surface movement operations within the
constraints of their job functions, and within limited areas.

Right. And they are not (necessarily) legal to fly an airplane solo
around the pattern. How much "special training" do you think it would
take Joe Mechanic before he can taxi a 150 safely from the tiedowns to
the service area, which is across the runway and down the taxiway a bit?

Not much.

Jose
--
Nothing takes longer than a shortcut.
for Email, make the obvious change in the address.