They purposely conflate physical size and position with apparent size and position including viewer height to claim obstruction due to curvature, obstruction due to a narrow band mirage with obstruction due to curvature, clipping from atmospheric magnification with with obstruction due to curvature, atmospheric compression as curvature and, atmospheric refraction with lack of observed curvature. The science of illusion.
Great picture. It really sums up their game (or lack thereof).
The best part is anyone with basic reading comprehension skills will see through it and hopefully research the subject further.