Yes, I fully agree.
I didn't really mean that to be beautiful it had to have, say perfect lines that conform to a particular ideal, more something that all meshes and looks right. I believe a beautifully-engineered functional object may also be described as 'beautiful' just as something very minimal or very ornate can also be. I think, for instance, all animals are beautiful whether or not they conform to the human ideal of what looks 'nice'. But if it's wrong, then it's plain wrong and doesn't fit the 'beautiful' description!