No it doesn't. It looks that way because they wanted it to. They could have made the same thermal core and made it a white matt cuboid I'm sure
Also you'd be surprised how fickle people are case in point;
There are lots of professional drivers around and by conventional wisdom people should get what does the job best, that is drive something that goes from A-B with the minimum of fuss, max reliabiltiy and some versatility.
A lot of them won't buy a car that they, not necessarily their customers consider ugly.
Their livelihood is based on it yet they won't do it.
Of course there are more ways to design a computer. Apple wanted a small and powerful form factor, and this design solved that problem. My point is that Apple was not trying to copy the look of certain types of trash cans.