In a way, you are right, the background is starkly simplistic. However, if what your showing off is the model, there is no better way to show it off than to have a very plain background. Seeing as how this model is incredibly detailed, and that it’s not meant to be a realistic looking model of a fighter jet, but of a model, I think it’s appropriate.
But isn’t it funny that with art, one sees something that “works” for them while another does not? My husband and I love to go to the contemporary museum and look at the weird (hey, I think I did it right!) art, and we’d have fun with it, and we were also amazed at how some weird blotch might be something that really “touches” one of us, but not the other. (I love the contemporary museum ‘cause it’s often so funny, what artist come up with, and people’s reactions [often inappropriately pompous or darn right frightened, LOL])
I must say, though, that I think it’s an excellent model and picture.