My statement says that people tried to tear them apart, and deny locations.
This illustrates exactly what I said above. In his affidavit of facts, filed with the court, Smith clearly states that he went to Mombasa, Kenya to secure the document. Again, Provenance is important, and your attempting to try to get him to compromise that provenance. It is not going to happen, unless he can do it without compromising the integrity of his evidence. If he won’t say, I would surmise it is because he has been told not to.
One can conjecture that the date stamp on the document and the post time of the video would satisfy most people. The shot location and the backdrop should be recognizable to people who have been there, but since I have not been there, that is pure conjecture on my part.
I have however searched the internet for pictures from Kenya and seen similar backdrops, which prove nothing really, but lends credence to its authenticity to me.
In the end, Smith is listening to council, which is as it should be. The fact that you, and others are not satisfied with the specific lack of information, IMO, is not as important as protecting the provenance of these documents.