Yep,
those jiggers have been around for donkeys. I believe that one of those is what inspired the first All-in-One brewery post, we even had contributions to the post from a european brewer who uses one.
The bucket in a Bucket all in one is more or less just a homemade version, and BIAB is a simplified version of that. Lots of thought and effort into creatng a cheap easy alternative to an already accepted brewing practise.
The revolutionalry part of BIAB was its goals, not really the process. All of which is one of the reasons I could never quite understand some of the more rampant BIAB objectors.
Thirsty