Overemphasis on nostalgia
The movie is an interesting exploration of history, but the nostalgia in it is overdone. They talk about "all those movies" that are only available on VHS. Let's face it, the direct-to-VHS movies were junk, even if some people did and do enjoy them for what they are. It's true that there are some theatrical movies that are available only on VHS, but I don't think there are that many.
As far as I'm concerned, we're in a golden age of movies on video that's better than the VHS era by far. Far, FAR higher visual and audio quality, aspect ratios intact, making of features, ability to watch via Internet distribution, Blu Ray, computers, etc. There's just no comparison.