I have wondered this too. I think it is still relevant, but very niche. Many companies are using Elixir and striving against their competitors, see Mux. IMO the reason libraries aren’t updated often is because Elixir is a completed language with no breaking updates planned [0], so libraries can be created and not need constant breaking updates. Also, you can do many things without using libraries because of Elixir’s and Erlang’s standard libraries and features. As an Elixir developer, I never go to Awesome Elixir to search for libraries. Its recommended to first look at Elixir docs, Erlang docs, Hex package manager or if still no solution found or have questions go to the Elixir Forum or Stackoverflow.

[0]: https://youtu.be/oUZC1s1N42Q

PS: Elixir is f’n awesome!