I watched the General Magic documentary couple years back... I'm sure it was just my perception, and maybe the video editing, but by what I recall it looked like they mostly goofed off and it was more a think-tank than actually building stuff. It's possible the video was cut this was to align with the "fun, silicon valley" narratives. Perhaps others felt the same who saw the documentary?
I got the same impression, although just from a few scenes. It's impressively bad that the Newton was a "clone" of General Magic yet it shipped years earlier.