Here you define by your understanding of how a camera works, and the truth of the scene. It is a photographic image because it uses a photographic process. Though it is fairly representative, in terms of colour/contrast it is enhanced and modified to convey a certain aspect of that reality, not all of it. Anyone researching the popularity of religion in the early 21st century might be misled. :-)
In years to come the meaning will change in the same was as if we looked at an old glass plate photo and see it as representative of the time rather than the truth of the object which it invariably was when it was first taken. It's an odd concept that we find it difficult to relate your photo of a static (and older) cathedral to how it looked in the mid 19th century and hard to relate a sepia tone glass plate image to how it looks today.