That's something that interests me about CEOs who constantly face criticism. It was always CEOs like Kalanick who bring
difficult but much needed change because they are brave (yes, I said it) enough to make some decisions.
It's always easy to point out the things they did and criticize them, but it is harder to realize the work that they put in and the choices they make to keep their company (and most of the time, the industry they're in prosper). If he would've played by all the rules, Uber would've had to put up a Goodbye page on their homepage a while ago. Taxi industry would've tried to decimate it, and what ever would've happened, wouldn't be good for the transportation ecosystem as a whole. Self driving taxis are even being talked about because of Uber. I think Uber moved the arrival of self driving taxis from the concept to the street a decade earlier (although I have to say it might've taken longer if Levandowski was never at Uber; lets wait for the outcome of the lawsuit)
Makes me think of Steve Jobs in the same way. Steve Jobs was (and still is in parts of the internet) intensely hated for his contributions. But he made a change in the computing industry which made computers (electronics in general) much more beautiful and a pleasure to use. Bringing about that kind of change is very difficult in my opinion, and we need brazen people like Jobs and Kalanick. They are sometimes immoral with their choices, but people tend to forget the world we live in often is too.