It's pretty easy to tell if any car, owned or rented has an E-latch. If you pull a lever to get out, it's manual. If you push a button, it's electric.
I haven't rented a car with an electric latch, but you can bet if I did I'd look up where to find the manual release.
Car manufacturers have had standards for a century, including door handles. Users of a product have a reasonable expectation of things to follow such standards. Tesla designers chose to deviate from such standards and people died.
Standards change. At one time the cars to which you refer, had no crush zones, metal dashboards, no seat belts and no safety glass. Modern cars that have electric door latches always have a mechanical back-up.
Let's keep in mind that these folks got drunk and high, then got into the vehicle and crashed into a tree at high speeds. The driver had a BAC of .195, over twice the legal limit.
I'll bet the girl's parents aren't suing the driver's parents even though he was drunk, high and speeding.
The drunk driver put them in that situation but the Cybertruck designers trapped them there.
Compare it to a fire in a building. Yes, the person who caused the building fire is at fault but you would have been alive if not for a fire exit door that doesn't have the standard push latch because the designers wanted to hide a release behind a panel somewhere and you, a building occupant and not the owner with the manual, can't figure it out before perishing in the blaze. (Along similar lines, in a building fire, locked doors are automatically unlocked once the alarms are triggered. That is not the case in the design of the Cybertruck).
There's no mechanical or structural justification to omit a manual door release in the design of the Cybertruck. It was for aesthetics only and as shown, deadly.
The crash is on the driver. The deaths are on the designers and engineers at Tesla.