I disagree. The alternative is some rockstar developer saying "let's pick Elm!" or "let's pick Elixir!" and then leaving the company after a few months. I'd take Java (or C#) over several other languages in a heartbeat. I'll leave the more esoteric stuff for the weekend, thanks.
I picked Elm once and I managed to convince my boss to let me got rid of it 6 months+ before I left. Turned out it's a good move! (well.. a not that bad move)
