Earlier quoted context omitted.
And you think when Google, Delphi, and Uber start selling cars, everything is going to work perfectly?
Of course not, but it will work a lot better than autopilot, with significantly lower accident rates. No system will ever be perfect, but there is a huge difference between privately testing something to the best of your abilities before releasing it, and turning on a beta feature easily capable of killing drivers via a software update protected by a disclaimer screen.
Just because something is in development longer doesn't mean the quality is better. Furthermore, Tesla might be gaining some critical information with their early release. And whose to say Tesla didn't test this stuff to the best of their abilities?
'Significantly lower accident rates' compared to what, exactly? The highly accurate accident rates collected from the many decades of experience with Tesla accidents that never happened?