I know you are trying to be serious, but you make it hard to take you seriously.
The idea that the Sun and Moon appearing to have the same size means distance has noting to do with it is about as bad as it can get,
He didn't say that the Sun and Moon had nothing to do with distance.
The actual reason we are able to see the moon is because there is enough light present, and it is large enough to be seen.
The explanation as to why the sun looks to be the size of the moon, although much larger, is because it is much much farther away, which is the reason it would look like a star to someone living on a planet at the distance of Rigel. This proves conclusively that the distance between someone looking and the object seen has no relation to time because the images are not traveling toward the optic nerve on waves of light; therefore, it takes no time to see the moon, the sun, and the distant stars.
IOW, we are able to see the moon, the sun, the distant stars, etc., not because one is 3 seconds away, the other 8 minutes away, and the last many light-years away, but simply because these objects are large enough to be seen at their great distance when enough light is present.
As we all know photons shrink as they travel making distant objects look small.
Or are they?
If I go up on the roof and hold a ruler up to Mt Rainier in the distance it is measured at about1 2 feet high. It shouid be easy to climb.
I know you said this as a joke. Obviously, there is a great distance between the Sun and our eyes versus a lightbulb and our eyes, and if he is correct, distance is not a factor in this version of sight (I have explained that brightness and size are). We are able to interpret what we are seeing, knowing that the distance of the Sun is a lot farther away than a lightbulb. Further, we can measure
actual distance by using the speed of light. A sidenote: When my son was a toddler, he looked up at the moon and reached for it, saying: Ball ball. I felt bad that I couldn't give it to him.