You experience pretty much match mine. My boss really wanted to use Elixir. Our CTO said he could only if he could convince 3 senior engineers and one ops pers

You experience pretty much match mine. My boss really wanted to use Elixir. Our CTO said he could only if he could convince 3 senior engineers and one ops person to agree to work on and support it. So he flew a whole team of us to ElixirConf. He organized a hackathon team around it. We rewrote some non-critical some services in it. All on company time and money. At the end, none of the engineers could sign off on using it professionally at the company. Elixir is a cool language and it was a fun learning experience, but it's such a shoddy abstraction over Erlang and that's not a pleasant language. The operational complexity is really high, and it didn't solve our problems better than our current core languages did. The ecosystem was also really lacking in unavoidable ways for us, which meant we spent more time developing libraries that would've existed in any other ecosystem than actually writing application logic.