that's strange -- as far as i know, the uber driver will only know your destination after they pick you up (so they cannot do this kind of thing). uber's feature page also say that https://www.uber.com/features -- "After pickup, we show the driver where you’re going..."

I also spoke with the drivers I used here in são paulo and they said the same thing: they only get the destination after the pickup and they only get my first name -- uber now is using a 3rd party service that proxys my phone so the driver won't have my personal number.