Very cool, if true

Possibly because the LLMs are certain and confident, and provide ONE explanation - whereas humans tend to know their knowledge has some limits, that there are often many possibilities of an explanation, and that in certain cases, it is simply the case that NOBODY KNOWS.

There was a whole TV show game when I was a kid, called "Call my Bluff", where teams of 3 actors (and the like) presented explanations of obscure words, what they meant, where they came from... but only one was true/correct and the other team had to guess which. So perhaps PROFESSIONAL improvisers and pretenders, trained in delivering fiction convincingly can do a better job of explanation in these fictional cases than ordinary people.

For the rest, well most people aren't trained in logical processes, and most that are, like scientists and technicians often are explaining subjects that take a massive amount of background knowledge and training to understand, and have never had a need to explain such things to people who know nothing on the subject.

Even more prosaically, "12 bar blues in, A, quick turnaround" describes a song well enough for the right types of musician to play together seamlessly without any further guidance. It works because it assumes a complex common background knowledge but someone unfamiliar with that would not understand that it was as complete as explanation as was necessary. Of course, it leaves a lot out that also will be filled in just by familiarity with playing music with others. E.g. no speed is given, and no indication of how long the song will be, but the right types musicians know how to follow each other, the drummer will count in and set the pace.