Again, the apps clearly show the make, model, color and license plate number of the car that will pick a passenger up. I just used Uber yesterday evening at SFO to get home to the South Bay - black Toyota Prius, license plate number and driver name were all shown in the app and that’s what I looked for, in the midst of lots of other Uber and Lyft cars picking people up at the international terminal. If anything, you get much better traceability with the ride-sharing apps than with taxis.
I know the apps show it. I also know that compromised people aren’t being proactive. They are vulnerable and trusting. There are reasons that taxis are marked the way they are.