Surely numbers are significant here. How many universities teach Haskell, compared to the number who teach Java? Of those that do teach Haskell, how many of them teach it to a level that someone taking that degree would easily be able to extend that knowledge to a level where they could get a job programming Haskell on a day-to-day basis?
It's also a question of perception. The programmers one wouldn't want to hire, according to the metric under discussion, are those who learn a single popular language just to get a job. Is Haskell generally perceived as a language where there are a lot of jobs floating around? If not, then presumably most people learning it will be learning it because they're interested, because they want to improve as programmers, and so on.
It's also a question of perception. The programmers one wouldn't want to hire, according to the metric under discussion, are those who learn a single popular language just to get a job. Is Haskell generally perceived as a language where there are a lot of jobs floating around? If not, then presumably most people learning it will be learning it because they're interested, because they want to improve as programmers, and so on.