A hole in RMS' line of thinking is this - he extends only one end of the argument, the end which says Uber will massively grow. He doesn't acknowledge the fact that there will undeniably be other competitors to Uber, a bunch of them might end up being free software. If history has taught us anything, somebody somewhere always tries to copy every closed source project in the name of freedom and open source. Why does RMS think this would be any different?
Also, he mentions only bad side of oversight. Even with such oversight, there are rape cases, mugging and other crimes done by Uber drivers. Without tracking, how does he propose he will solve the problem? Maybe he should protest for no oversight when his own daughter takes a GNU/Cab. Why mock what you don't understand? Contrary to RMS standard belief, the invisible hand in the world is not stupid, people put up with what he calls "sins" because there is an offsetting value they are receiving.
Uber in current world is equivalent of someone entering the room, trying to find a light switch, not knowing what we will find. RMS' complaint is that he is vegan and the guy finding the light bulb is wearing leather shoes.
And Uber does have competitors, and they are solving points he mentioned. In India, Ola is one competitor that allows cash, and allows anonymous bookings via a call centre that does not require me even telling my name. But even Ola knows it wouldn't exist without Uber in this world.
Why shoot the guy who is trying to push the envelope?