Not from the US, but in the UK I'd much rather see a system where I can give a real feedback about the ride. There's a lot of talk about how Uber is not responsible for drivers and is only matching parties to workaround the law. In practice it looks like this to me:

In a usual "city-approved" taxis you get crazy behaviour, parking in dangerous places, speeding, etc. Try complaining and you'll learn that drivers only rent the communication equipment - the company is not responsible for what they do.

In Uber, I got a dangerous driver only once (where "dangerous" meant tailgating, but nothing really bad). He got 3 stars and a comment. I got 2 emails following up on the situation and Uber's assurance that the driver has been talked to.

So yes, I'd much rather share the road with an Uber/Lyft driver, because I know the feedback actually works in that case. There's another case of what insurance they have of course... but that's another topic about actually using the service.