I enjoyed it. I didn't realize that so many figures in tech had this common meeting point. Also a great demonstration of how being too early with an idea can be detrimental.
As someone who lived through the General Magic era and got to try the device, I found the movie a total bore. It's talking heads. They skipped the most interesting part which is the device's novel UI. That and the application service frameworks were the real innovations and both were to early for their time, but there's no coverage of that in the movie.
The company General Magic was before my time as a mid-30s developer. I thought the documentary was great because there was a lot of history I was not familiar with. I recommend it.