I worked as a CPU logic designer on several mainframes of different architectures before moving to Sili Valley. The "look what I just invented" arrogance I encountered astounded me. When I said something like: "You know, Seymour Cray invented that around 1959, right?" the cognitive dissonance was more than they could handle -- I was usually ignored. So, no, they aren't re-implementing, they are genuinely re-creating history and being proud of themselves for it.
It's everywhere these days. That would be very naive to expect from NoSQL 'inventors' to be familiar with IBM IMS and ADABAS, CODASYL Data Model, the history of pre-relational databases, or at least MUMPS or GemStone/S.
I worked as a CPU logic designer on several mainframes of different architectures before moving to Sili Valley. The "look what I just invented" arrogance I encountered astounded me. When I said something like: "You know, Seymour Cray invented that around 1959, right?" the cognitive dissonance was more than they could handle -- I was usually ignored. So, no, they aren't re-implementing, they are genuinely re-creating history and being proud of themselves for it.