Yeah I have done similar evasive maneuvers a bunch of times. Also people run stop signs constantly, a competent defensively driving human may have just not started driving forward yet when they saw the other car driving towards the stop sign with some speed. I’m not sure of the exact timing in the story but I’ve waited at a stop sign when I saw another car driving towards the intersection many, many times, and a small percent of the time they don’t stop.
Which isn’t to say that the average driver wouldn’t have hit it, it’s just not obviously superhuman.
In this case, the other car didn't run the stop sign.
It waited at the stop sign like it was making a turn, then suddenly entered the intersection when the Waymo was 5-10 meters away, despite not having the right of way.
Maybe they were trying to commit suicide-by-Waymo?
Do you drive a lot? I feel like humans take evasive actions like this all the time.