Earlier quoted context omitted.
Where are you browsing for images of space that everyone you looked up it was fake?
I think these fake photos are ones his friend offers up to him as evidence. It's not too hard to find "fake" images from NASA; they release a lot of composite images, false color, etc. Presented in the wrong way, or to somebody inclined to cynical skepticism, these can be construed as 'fake' and used to reinforce that cynical skepticism. An important question to keep in mind when playing this game: was the fake photo…
Many of the images that we get from NASA in general aren't event "photos", they're composite images, just as you said. For example, a lot of "color" images are composites of black and white images shot through blue,green,and red filters and then re-assembled on the ground. They're "true" in the sense that they're not deliberately falsifying things, but not they're not "true photos".
Somewhere (can't find the source at the moment) I recall reading that some of the early lunar reconnaissance photos were purposefully made lower quality by NASA because the U.S. wanted to keep it a secret from the Soviet Union just how good our orbital photography had become.
Just because it has some obvious and provable editing does not mean that it's a falsification.