I wouldn’t say Elixir is only good for web programming, like I wouldn’t say Python is only good for web programming (it’s used for many other things). For an example of something in Elixir that’s not web related, check out https://nerves-project.org/ (Elixir for embedded basically).
I think just currently the web side is pulling so many developers and is the biggest area in software development (in my understanding at least), so that’s why most job ads are for web programmers.
