A huge fraction of the people who are trying to learn to use GraphQL (to use your example) are trying to learn to use it in the context of React and Express bec

A huge fraction of the people who are trying to learn to use GraphQL (to use your example) are trying to learn to use it in the context of React and Express because they have a front end problem they need to solve with it. The blogs they write aren't really about understanding GraphQL in totality or on its own, they are tutorials on using GraphQL in a context with which they the authors (and a great many of the readers) are familiar, namely Node.js apps running Express and React. The huge number of posts like you refer to is one of the things that draws developers into an ecosystem like React and Express. There is simply far more written about how to use shiny-new-thing in the context of solving a problem in a big existing ecosystem than in the context of pure discussion of some hot new but still largely unused tech, largely because there are so many more potential readers in that large existing ecosystem, and those readers want to read how to solve the problems they face in their ecosystem. Long ago Microsoft's Developer Division talked about this as the difference between three different developer personas. The fanciest persona was "Einstein" who wanted to understand everything about how the tech worked. The lowest was "Mort" who was a dentist who just wanted to learn to write a little bit of script to print a report he needed for his business. And in the middle was "Elvis" who wanted to learn enough to understand what he was doing and to do his work but was ok not understanding everything. Most front end devs are not in the "Einstein" category of how they learn technologies. They are much more motivated by the need to solve an immediate business problem, and they tend to do a lot of blogging because there are so many of them.