Theres countless videos of GoPros attached to high altitude balloons, as well as rocket launch videos and the live feed from the ISS (which you can observe with a telescope).
No scientific evidence to refute any of that, just a bunch of raving lunatics with no credibility in any field on Youtube on the other side of that argument. The field of Aerospace is not a scam.
The GoPro uses a fisheye lens.
"A fisheye lens is an ultra wide-angle lens that produces strong visual distortion intended to create a wide panoramic or hemispherical image." -- https://en.wikipedia.org/wiki/Fisheye_lens