If he's trying to prove the earth is flat, what's the point in being a passenger on the rocket? Can't he just strap the GoPro onto the rocket. Or better still, maybe just ask an astronaut for some photos?
At a guess I'd say he wouldnt trust photo's in case NASA somehow hacked his go-pro and swapped his pics with photoshopped fake one's and he can't trust an astronaut as they work for the globalists