2) The lack of a picture doesn't mean the two were never physically close enough to be photographed together. It just means they were never so when a camera was around.
3) It ignores the broader social context in which Google is the funnel through which information exists. If the ministry of truth wants to rewrite history, they'll do so by manipulating what Google results are available. The entire point of the article is how history can be manipulated, and then succumbs to verification via a source that can, in fact, be manipulated. That is, imagine a picture was taken, and you're sitting here thinking, "I really thought those two met." If verification constitutes, "Is it on Google?" then the task of changing history is pretty easy.