The reason such alleged pictures of the world may appear as two dimensionl is not because the world is flat. The Earth is flat, but that is beside the point. The pictures are completely fake. A photograph of a globe is a two dimensional representation. Such a picture is what was posted on the windows of the room where Collins, Aldrin, and Armstrong were located in the moon hoax video broadcasted in the summer of 1969. This also applies to subsequent moon hoax videos filmed and broadcasted in the early 1970's as well as to fabricated pictures which are falsely said to be photographs taken by "orbiting satellites." The fact is that orbiting satellites are science fiction, and none of the photos were taken in "space," but manufactured on Earth by disinformation agencies like NASA which was founded to spread belief in fantasies like interstellar travel and orbiting satellites.
In some "photographs" of the world, nothing more is done than to use an aerial photograph of a clouded area and black out everything except a circle and present the finished product as a photograph of the world taken by an orbiting satellite. Photographs presented as pictures of the entire world are fake.
"Hast thou perceived the breadth of the Earth?"