Well then what is the point, EnragedPenguin? If that photo really is faked, it shouldn't be hard to prove.
The point is that even if you gave me ten thousand pictures of a round Earth, and I somehow showed that they were all fake, it still wouldn't mean that my pictures of a flat Earth are real. If I gave you ten thousand pictures of a flat Earth, and you managed to prove them wrong, that does not mean your pictures of a round Earth are real.
It also doesn't mean that there aren't any real pictures of a flat/round Earth.
If you give me a picture of a round Earth, the fact that I can't prove it's fake doesn't mean it's real. Same applies if I give you a picture of a flat Earth.