Or flick your high beams, quick beeps, adjust speed... I do all these things if I see anything on a collision course with my vehicle.

It is surprising to learn that these vehicles are operating at night. To collect training data, since nighttime driving is inevitable, perhaps there are ways to simulate night to the computer vision systems during daytime so the human supervisor can still see clearly.

Lol, the "human supervisor", looking at his knees, probably on reddit or tweeting.

Would you trust this system that didn't even manage to slow down at all with a pedestrian slowly pushing a bike directly in front of it, artificially adjusted to be even worse, driving during the day??

I wouldn't.