Well sure it looks crappy. I'm sure there's better ways to simulate micro meteorite impacts and paint chipping away. This however was a really great unintentional crappy way of doing it. Eye of the beholder here, sure it looks crappy, but the crappy normal map makes it look old and beat up in my head. That's pretty cool to me for something that was accidental.
EDIT: The chaoticness of the normal map is cool. But, they're not really so chaotic, the artifacts are only in the areas of the escape pod where there are supposed to be metalic nooks, crannies, indentations (which happens to be all over the ship). So yeah the whole ship is covered up in artifacts, but mainly spreading out from the areas that the normal map was to bring out the nooks, crannies, and indentations along the hull.