Do you know why the fuel tanks in ICE vehicles are not stressed members of the chassis? Yep, because they don't want the tank to be breached in an accident. Tesla's early cars used the battery as a stressed member and they got roasted for a few battery fires. Now they fix the problem and they get roasted for wasting money.
It would be comical if it weren't so callous to the survivors of battery fires.
Gas tanks are protected by supporting them with flexible straps. Even if the frame structure is deformed the strapping holding the tank will not crush the tank. Why would you suggest the battery of a Model 3 doesn't deserve equal protection? This was obviously a conscious decision by Tesla, not an exercise in ignorance. I wonder how many EV's Munro has designed and manufactured? I would buy a Tesla over a "Munro". Especially if he used the highly flammable battery pack to absorb crash energy. Nobody wants to be in an accident but, if they are, they don't want the battery to burst into flames.