I'm pretty sure that I could get a picture of myself, in civilian clothes, sitting in a flight simulator. To use that to "prove" I was a pilot would be ridiculous.
Showing myself in, say, an Air Canada pilot's uniform wouldn't be impossible, but it would be a lot more difficult. However, if I were a pilot, I bet I'd have scads of photos like that.
Verdict: Reports of his airline status have been greatly exaggerated.