If they were going to fake a photo, why do such a poor job lighting the seamless? The backdrop is an unattractive dingy tone.
I don't doubt that it is over manipulated (most art directors have a heavy hand in Photoshop), but I do doubt that it is fabricated.
FWIW, I shot products on white backdrops all day, five days a week, for four years. If I had the parts on hand, I could turn out that picture in 15 minutes from powering up the flashes to ready to publish. If the studio was already set up, and I was already on staff making $20 an hour, it would cost the company 5 bucks.
I'm not saying that it is not possibly fabricated, just that is is unfair to criticize them based on something that we don't know to be true.