Its pretty much the same thing as in every previous age, where not having a community of experience and the supporting materials they produce has been a disadvantage to early adopters of a new language, so the people that used it first were people with a particular need that it seemed to address that offset that for them, or that had a particular interest in being in the vanguard.
And those people are the people that develop the body of material that later people (and now LLMs) learn from.