Great news
Carving out of one piece = less aluminum. If you bend it, then the aluminum needs the be thicker everywhere else (far thicker than it needs to be) so that it isn't dangerously thin at the bend point. Even then, the bend will still be relatively weak. Carved out of one piece, The curves are as solid as everywhere else, so you can use less aluminum in the places where there is not much danger for stress and damage, while not worrying that the curves will still be too weak. The shavings can easily be recycled (likely in the same factory), so nothing is lost.