I don't know and it's tangential to the question of whether "elixir is a general purpose language".
Might be important for you, but it's irrelevant for my comment.
My main point is that a language’s historic design considerations, community and ecosystem play a huge part in determining its applicability to a particular domain. Years of personal anecdote, coupled with the history of the project, and what people are building with it in practice (rather than what could be built in theory) drive my conclusion that it is not a general purpose language. That doesn’t mean it’s not a good language for what it was historically intended for.
But in the process you are redefining general purpose language to general applicable language and making everybody confused. Why not adhere to the general convention and accept that Elixir is totally a general purpose language but has limited applicability depending on the domain.