Earlier quoted context omitted.
So in this setup a driver allergic to dogs should not be allowed to drive for Uber?
No, Uber simply needs to accommodate a passenger with a service dog, by assigning the closest non-allergic driver to them, and the driver not refusing service.
But my thoughts drifted to what if a driver without allergies picked up a passenger with a service dog, that driver would then presumably need to spend time vacuuming the car such that another passenger with allergies isn't also impacted?