It's easier up until it's time to drop you off, and the selected dropoff point is suboptimal or plain impossible to stop at, and you want to give the car last-minute directions. Then the traditional, "human driver way" of looking out the window and telling them where to go based on what you see is far superior than trying to perspective-switch between the 3D situated view and imprecise, finicky 2D map interface.

A perfect interface would be a combination of both ways. Also it depends on personal preferences. I learned to use a paper map as a teenager and it’s convenient for me but I know some people struggle to find a way even using a map on a smartphone.