I don't know how they know that they'd they'd love a job programming a functional programming language, if they were not passionate enough about Haskell to self-learn (not hard, there are books).

It seems so paradoxical.

It's a bit like someone saying, I'd love to be a hairdresser, do you think it's worth studying to be a hairdresser? There's something which blows up my brain to read that. If you love it, do it.

Nothing makes sense here!