Watching the closeup images in the live feed. That rocket is more boilerplate than sleek and streamlined. In the fifties and sixties, a lot of attention was paid to streamlining rockets wherever possible to reduce drag. It looks like the designers of the SLS just didn't care. Or maybe they determined it doesn't matter as much. Could be that it's a cost saving measure. Who knows.
Looking at SpaceX designs, they are somewhat similar in the lack of streamlining, though you don't see many actual big honkin' bolt heads hanging out in the breeze like you do with SLS.
