Again I have to underline this. You haven't argued that taking all things into consideration, there is a strong possibility that some of the film may have shown signs of fogging. You have characterized it, repeatedly, as a home run, a shoe-in, that the film would absolutely be fogged, totally fogged, that there is no chance that any kind of camera could protect it.
Furthermore, you have held up an experiment using only x-rays as proof, and argued in such a way as to appear to be claiming that solar x-rays alone could and would fog the film in this manner.
Which means you have, inescapably, described a sun much more violently active in x-rays than is supported by the literature. The onus would be on you to either show that contrary to other people's understanding the sun is indeed thought to be that active in that way, or that everything space scientists think they know about solar activity is wrong.
These are not subtle points. They don't require finely grained calculation.