There are two sides to the coin. It is a LOT easier to hire for a Haskell developer, because the pool of jobs is so small compared to the amount of people that would like to work with Haskell in their daily life.
That of course also means that the opposite is true for someone looking for a job—it's a lot harder to find something, so most trudge on, writing code in some language and then use Haskell in their spare time.
The last part usually also mean that the developers you find, as a company looking for someone, usually have a higher lower bar, by the very nature of having invested time into learning a niche language. Of course, that goes for most such cases as above, not that Haskellers are magically better programmers.
That of course also means that the opposite is true for someone looking for a job—it's a lot harder to find something, so most trudge on, writing code in some language and then use Haskell in their spare time.
The last part usually also mean that the developers you find, as a company looking for someone, usually have a higher lower bar, by the very nature of having invested time into learning a niche language. Of course, that goes for most such cases as above, not that Haskellers are magically better programmers.