Holy crap! They can get that plane into medium Earth orbit!!
Well, there goes that site's credibility.
well, you did pick an extreme wide-angle shot, and the horizon is severely distorted and absurdly curved, so that's a pretty easy straw-man for you to knock down. maybe you didn't know it was extreme wide angle though, but if not, you know now. there are however, a couple of other pictures in the same cluster with longer focal lengths which look to be more accurate.
either way, i would not personally feel comfortable presenting a picture showing the curvature of the earth--where the level of lens distortion is important to consider--from a camera and focal length that weren't documented. so that rules them all out for me...at least as candidates for presentation as evidence. (obviously i don't find the two that appear to be of longer focal lengths with minimal distortion, to be any surprise.)
but bishop, at least, is big on personal anecdote. he even solicited it once as suitable evidence. so why are the anecdotes listed on the site not enough? (note, i haven't revealed what i think about anecdote as evidence.)