First, post something false, prepare to be corrected. "In the US, it’s always considered the fault of the person who read ends someone" just isn't how things work.
Second, I'd expect Cruze to at least have civil liability if their cars glitch and brake spontaneously, resulting in an accident. Since spontaneous braking is something autonomous vehicles have struggled with (Tesla at least), yes, it's relevant.
I've been brake checked by a cruise car in SF. I had a dash cam and had I hit it I'm confident I would have been cleared and the robo car that stopped suddenly randomly in the middle of traffic would have been at fault.
They literally have signs on them that say "warning, stops suddenly" , not a joke, literally
Your reply is totally relevant in the context of someone blaming driverless cars for stopping when it doesn’t know what to do.