Because it's no more risk than just driving a regular car on the road? Uber employs/contracts thousands of regular people to drive customers around and I'm sure

Because it's no more risk than just driving a regular car on the road? Uber employs/contracts thousands of regular people to drive customers around and I'm sure some of them have had accidents as well - they just don't make the news as much. There is this secondary issue that partially autonomous cars give the driver a false sense of safety but that's not unique to this case either.