Some people are, but a lot of people wrap or paint new cars, while most leave it alone. I just posted a poll in a FB group with 136k members, of which at least 136 are most likely not GM/Ford/Ram trolls explaining why its not a "Real Truck"
tm and cant do Real Truck Stuff
tm like hauling a trailer with a Cat D6 on it, like all the F-150s can
And yes, I've been told that its not a real truck for that reason
Might be coated or treated, we just dont know.
Crumple I think will be handled by scoring the plates to guide crash energy, just like crumple beams in conventional auto bodies do now. So front and sides will collapse in a designed way. And the stuff they are sending into space isnt unlike other things that have gone to space in that these are fully reusable with an expected lifespan of years with tens or hundreds of launches so durability is a requirement for Starship. That was one of the reasons they went with steel, these new rockets are not throwaways.