So stop saying it has! I demand proof!
Usually these things come with PRESS RELEASES. IF they don't, and the video gets pulled, then yeah, it's probably real. Key-word: IF.
I don't think fallout has ever revisited any of its settings, save the edges of the map between 1 and 2. San Francisco was a major location in Fallout 2, so is unlikely to be back soon. Also, it was peaceful and largely rebuilt by the Shi, there wouldn't be much to legitimately shoot at.