Look, the manual of the car details that failure mode, it was predicted this could happen, it is proven (by the manufacturer, in the instruction manual) that that failure mode exists and the people involved in the accidents testimony corroborates that the button was not working. If you want to bring in deformation of the frame to the point where the doors do not open into play then I think you should provide the evidence, everything else points to the simplest solution: electrical system failure. And trust me, you want that electrical system off, even if it is only the 12V battery it could turn a simple accident into a very bad one in a hurry. 12V batteries are more than capable of turning a bunch of wiring into a nice little fire starter. I've seen this up close and it's not pretty.

Note that Tesla would be absolutely horrified to learn that this accident did not allow the rear doors to be opened mechanically because they were jammed as that would indicate a structural un-soundness of their chassis design.

Note that EURO NCAP makes fairly explicit mention of whether or not doors can be opened after an accident and that that passenger compartment deformation is a huge factor in the rating a car gets.

Electrical problem + making a nice handle on the door for emergency release: fixable. Rear doors jammed after mild front impact -> back to the chassis drawing board, massive recall.