Tried GoLang and also used Phoenix for a massive project which went well. But we had problems onboarding new folks into it and some junior and even senior engineers went bonkers trying to get their heads around FP and the elixir language in general. I would say it worked great for me, but the problems and the curve of learning for others in my team made it feel like Elixir creates that gap for teams in general.
Go is good, but again I only tried it long ago and can't comment it for what it is today. I loved Ruby but I find it hard to go back to it after my experience with Elixir and Typescript. I was hoping for Crystal to go to great lengths but it doesn't seem to be the case at all.
You do need to set some rule when onboarding people into an Elixir application. Not everything needs to be a GenServer, and please don't endlessly nest Enum.map calls.
Go is good, but again I only tried it long ago and can't comment it for what it is today. I loved Ruby but I find it hard to go back to it after my experience with Elixir and Typescript. I was hoping for Crystal to go to great lengths but it doesn't seem to be the case at all.