I disagree on a couple of notes.
Audio logs are a good way for them to convey a story of some one, and give an insight as to what happened.
Case and point, in Bioshock 2 there is a man from whom is looking for his daughter. You find these diaries of him talking about what's going on, and what the bloke is thinking. It adds tension and story, and it blows you away when you hear him yelling at a big sister, or when you ultimately kill him as he became a big daddy. The way it was done was great, and it added to the atmosphere of the game and ultimately made it more ENJOYABLE.
Audio logs may not be perfect, nor may the be logical but it's butt tons more then not having them at all. They just need to be refined, and perhaps a more logical reasoning for it. Perhaps a person in the games only audio log series is part of a filming team, and as such would have access to a vast amount of audio reminders, maybe some ones in a mall, and there are a bunch of audio reminders.
Just my 2 cents.