I think it’s great for boring stuff — the Phoenix web framework is really straightforward. Learning a whole new language paradigm and environment for a professional project you need to be productive in ASAP is definitely the worst kind of ‘not boring’ though.

I know of a Haskell shop and everybody said they’d have a hell of a time finding people… but all them nerds were (and are) tripping over themselves to work there because they love Haskell… though some I’ve talked to ended up not liking Haskell in production after working there. There seems to be a similar dynamic, if a bit less extreme, in Elixir shops.