Doc, welcome to the forum .That Vegas story is crazy. They refer to Uber as a "ride hailing" service which it is not. Cabs are ride hailing service. Uber is call service rides. Totally different but kind of after the same customer. I had my first cab driver shake his fist at me in an angry way today.
Ride hailing is a closer description than ride sharing. It's an electronic hail.
Don't worry about the cabbie shaking his fist at you. It's not you, it's them.