It takes nine seasons of filming (according to Pam ten years) before the results are shown on television? All of a sudden the weakness of the show's premise becomes obvious. The idea of having a sitcom where the characters are aware that they are appearing in reality TV seemed great (and the format is still being used on new shows) but it doesn't make sense if the show runs for more than twenty-two weeks. At one point, the characters would have had to come to terms with newly-found fame as the results of their appearance on national television. But The Office is a show about people in the workplace that uses reality TV techniques, not a show about reality TV.
Imagine a second season that had Michael Scott dealing with the press as a new television star. But no, the show ignored the reality TV angle, as did most viewers I guess. Did anyone feel uncomfortable when they witnessed private conversations between lovers? No, because you forgot about the reality TV concept.
As the show nears it end, loose ends have to be tied up, but they draw attention to the lack of reality.