I also feel sometimes there is a tendency to overcomplicate by taking very simple concepts and ideas and assigning a name or almost "field of research" to them.

The main example I can think of is "Dependency Injection". The idea to pass an object to another object (for different purposes, e.g. testing) is pretty simple and understandable. But over time the term " dependency injection" has probably confused a whole lot of people but for some reason a term just had to be coined.

I do understand that it's probably not on purpose because the author(s) are deeply studying or thinking about what they are describing (probably more so than the readers) and maybe coming up with new terminology does help them to keep making sense of it all.