I've seen the scenario in the film plenty of times.
Car stopped in lane.
Traffic in front lets, even with everyone following 2 second rule obscures view of car and its only at the last second where you are able to see the stopped car (its only after the person in front you changes lanes where the car just pops up out of nowhere).
It happens and no one needs to be the bad guy for something like this to happen.
The stopped car could have lost power and been boxed in, preventing them from moving over or they were stopped in traffic and the car died.
The red car could have just pulled out for a passing maneuver on the truck only to be met with a surprise in the middle of the road.
With only the gif to go by, the only person driving like a jerk is the cam car.
The only way someone isn't at fault here is if their brakes failed without warning. Even that can be placed on their shoulders if they've been neglecting get them checked periodically. A car accident where someone isn't to blame, either through recklessness, inattentiveness, or negligence, is such a rarity that people generally are justified in looking for a culprit. Just because it happens .01% of the time doesn't mean we have to give that possibility equal consideration.
Thinking about it objectively, I really blame all the cars. I'm prone to internalizing everything that happens to me. Instead of looking at the other guy, I always tend to blame myself first. If I were in the stopped car I would blame myself for not coasting out of the road when I recognized that my car was failing and for not getting my car checked out to keep it from failing in the first place. If I were in the red car, I would blame myself for not paying enough attention to the road or leaving enough space in front of me to brake to a controlled stop when I saw the stopped car, thus telegraphing my intentions to the car behind me. If I were in the grey car I would blame myself for following too closely behind the red car. If each had done something a bit differently the accident could have been avoided.
I think the most important thing to remember is that when you are behind the wheel, YOU are ultimately the only person who can guarantee your safety. If you never do anything that depends on the actions of other motorists to be considered safe, you never put your safety in the hands of anyone else. The red car was depending on no one being stopped in the middle of the road. The grey car was depending on the red car not doing anything sudden. The stopped car was depending on everyone in the road paying enough attention to avoid hitting them. In a way, all of them made the same mistake.