There is a tendency for a lot of people to hang on to tools and ideas that worked for them in the past. e.g someone who comes from a relational world, finds it very hard to get used to nosql unless their boss gives them no choice.

I work on a system at my dayjob that was "NoSQL" in the 1980s and is functionally similar to modern document-databases.

So...yeah. I'm sorry but the idea these things are "new" is the perception of someone who hasn't touched older technologies.