"If you have an argument with another car, you will win" - said Elon when discussing Cybertruck crash safety.
So for sure the mass is as an advantage, at least for some people. Same with size, power, resistance to crash .. just make sure it's the other guy who is crushed, not me, in case of an accident. With such attitudes, why would you choose a small, lightweight, unarmored vehicle? Just to put yourself or your family in danger?
Unfortunately, Elon doesn't say what happens when two Cybertrucks collide head-on. Would they annihillate together with the occupants?