Thats because the moon landing was in the pewter museum. And again you do not bother to read. "Most ACCEPTED canon lineage" meaning it is them most commonly accepted time line thanks to info from the games.
Just a side note: your link says right on it, "This article contains fan speculation. There is no solid evidence for or against some parts of this article."
I wasn't going to continue that discussion there, and I actually was not aware of that link in the past. That contains a LOT of reading, but I find it interesting that 1969 and Man on the Moon is brought into the timeline.