Everyone who drives a tesla knows how their car behaves. I don't expect it to see that barrier when I'm driving my model 3.
Listen - it's hard to imagine what it's actually like to drive a Tesla and learning what it can or can't do. Everyone driving a tesla right now knows that the autopilot is more like a rookie co-pilot that needs monitoring and checking all along the way. Despite its limitations its still the best car out there from what I've personally experienced.
That shows just how badly people want to do something else instead of driving though, and how important autonomous cars are. If tesla (or some other company) can get it right, this is transformative.
Pay attention to other drivers, I've seen people watch a movie on their phone while driving.
I've seen people move their hands completely off of the wheel and drive.
At least with this you usually don't go hitting other cars, rather hit barriers and walls.
I'm not defending tesla here, I'm just saying this tech is still far better than the average driver paying barely any attention to the road.