It's not worth worrying about. Both Uber & Lyft issue a credit for the penalty if you say that the driver did not show up. I have no idea what happens if you do this constantly, but that's unlikely to occur except with a crank. I also don't know and don't care whether they ding the driver if it happens (or if it happens often).

I do find it useful at volume places such as DCA where circling back in not in the cards (give the driver the door number and stand on the pickup island at the extension of the door location, or if you are at a known tough location, to initiate a call yourself.