Notice the careful non-statement by Lyft. It's hard to believe Lyft isn't doing exactly the same thing.
It's not questionable behavior to track what your competitor is doing. That's the first step toward beating them. And yes, Uber is trying to beat Lyft, just like Lyft is trying to beat Uber. That happy balance is a good thing for consumers.
It's pretty strange that I have to second-guess whether to post this comment since it could be interpreted as a defense of Uber. But the PR spin is getting to be a feeding frenzy.
Is all tracking now unethical? Under what circumstances should you be allowed to track other people? Google knows more about you than your significant other. Should they be allowed to do this? Is this ethically questionable? What is the categorical difference between Google and Uber? These are questions which have no clear and easy answer, but it's painted as if it's so clear-cut.