I completely disagree, it's downright dangerous to not evaluate the behavior of other drivers around you. If I see someone aggressively changing lanes or tailgating, talking on their cell phone, or doing anything that looks risky to me, I mentally note it and keep as far away from them as possible. I'm frankly amazed anyone wouldn't do the same.

I agree that Alice in my example doesn't have any legal fault for the accident. Maybe this is a cultural difference, but as I see it she does share some responsibility for being in the accident if she didn't make a best-effort attempt using known-good practices to avoid it. All drivers share that responsibility.