I disagree. Uber facilitates the process of becoming a driver, therefore there will be a larger supply of drivers. I believe the price of a fare will decrease due to the increased competition.
The app is much smoother than the 2011-era cab experience — call a phone dispatcher, hope a cab shows up eventually. (Of course, Lyft provides exactly the same experience for consumers and even taxi companies are attempting to provide an app nowadays.)
A company that pays 50$ less to get an employee can reduce fairs on the order of 1 cent or make an extra 1 cent per ride. It's possible Uber might add a few cents per ride this way, but it's not particularly significant even assuming the average driver does not last that long.