I don’t agree with this. It’s exactly the situation where autonomous systems should excel (speaking in general) - constantly gather and process data faster than human reaction times, with no distractions or inattention.
If these cars are converging on autonomous operation, they need to deal with situations like this, which aren’t much different than an adult pedestrian stepping out in front of the car (another bag of water, lol) or the harder case of a little kid running in front of the car.
No you are wrong no system can predicate when a animal will either decide to freeze or dart out randomly. At best it can tell you that there is a deer near by.