I’ve never needed to use erlang in all these years. I have to imagine I’m not alone in finding erlang’s syntax more cryptic, given that erlang hit a limit and elixir broke through to a much wider audience. I don’t know what would make me a more “serious” developer though, having successfully built a few mission critical apps with elixir.

I have built one supervision tree and built GenServers, but I haven’t done much more OTP or cluster and node communications, if that’s what you meant. I’m genuinely curious about what you mean by serious elixir developer.