You’re focusing on a statement from the owners manual that’s no different than any other car with paint, though. You gotta look at the whole picture.
Is a ford bronco rugged? What about a jeep wrangler? How about a rivian? Cause every single one of those will look like hell if you drive it off road and have it scrape against tree branches or something. I suspect the cybertruck panels would be substantially more resistant to trail striping… which is a huge plus in the durability/ruggedness side in my book.