"Tesla didn't account at all for what happens ..."
Tesla might not have, but you can. Always have a glass breaker and seatbelt cutter in your vehicle. Doors get crumpled and can't open regardless of make/model.
With tempered glass, firefighters heading for a vehicle accident attach glass breakers on a string to their gloves. That way, they can pull a person out of a car in 20 seconds if the immediate danger is larger than the medical considerations, and the person isn't stuck.
With laminated windows, you need a Halligan bar or some other poking tool (sometimes forcefully moving a spike towards a patient) to make a hole, a Sawzall which needs 10 seconds alone to go through common glass, time to get all of that...
It's worrying how much faster vehicle safety is moving compared to emergency extraction capabilities.
Usually rear windows do not. Even laminated side windows can be defeated more easily if cracked. The lamination is pretty thin compared to many other types of laminated glass.
That advice will work for significantly limited number of population. Like, it's true, but also "hope you have enough mass/strength/flexibility". My little-old-lady neighbour could not do it.
Isn't this advice becoming dated now that most new cars have side windows with laminated glass?
https://www.caranddriver.com/news/a28422725/car-windows-glas...