Prove that it's glare.
That is easiest done in person. If you alter the exposure setting of the camera, the glare changes, but the actual size of the object does not.
This can be seen in some footage, such as when the sun is obscured by a cloud or mountain.
But as I said before, the easiest way to show it from the photo is that it doesn't have resolvable features and instead it just a bright spot.
Why would glare cause bodies appear to be the same size into the distance?
The glare and limits of angular resolution.
An object in a photo can never appear smaller than 1 pixel. If it did, it wouldn't be there.
With how the photos are processed to reduce, they typically take up several pixels at the smallest, for example if you look at the edge of the buildings in those photos instead of being a sharp edge of one pixel they extend over 3 or 4.
If glare at is making a body 2x its size
It doesn't.
Instead it makes it appear a relatively fixed size.
This is due to a multitude of factors including scattering of light as it passes through the air, multiple reflections inside your eyes and the nature of how your eyes work.
But this is all ignoring the main point of this thread, the double standard that FEers use when it comes to rockets and the sun, claiming that because the rocket appears to go down, it must go down and not actually go to or stay in space, but the sun is fine staying up there even though it appears to go down below Earth.