One of the big reasons that "California Typewriter" showed up on my radar was likely because I happened to be reading a book at the same time called "Revenge of Analog". That book describes a movement back towards things such as records, paper, board games, and other physical (not digital) forms of leisure and commerce. That is the main theme of "California Typewriter" too...only focusing on the device listed in the title.
This documentary basically focuses on a number of different human interest stories involving a piece of technology largely thought "obsolete": the typewriter. From Tom Hanks' typewriter collection to the actual California Typewriter story, to a sculpture artist and and a collector looking for his coup de grace (and even a little history thrown in), this doc attacks the typewriter's story from nearly every angle.
Even above the human stories, though, is the notion present throughout the entire doc of that "return to analog" of sorts. As technology marches on, sometimes we don't stop to evaluate whether the physical experience of creation needs to take a back seat to the ease of creation. Don't get me wrong...I'm not exchanging my iPhone for a flip phone, nor am I turning in my MacBook for a desktop PC. I'm no Luddite. But it is a fascinating idea for me (old enough to remember a time before the Internet and mobile everything)...this notion that sometimes, say, the act of typing something on a physical device might be more satisfying than the ease of a word processor.
So, even though I'm not really "into" typewriters (I can honestly say I've never used one in my life!), I can say that this doc fascinated me and connected with me on a nostalgic, but also intellectual level. A return to analog devices may not be for everyone, but docs like this prove that the newest technology may not be for everyone, either. There is room for both, and even a mixture of both.